diff --git a/.eslintrc.js b/.eslintrc.js
index 24e94823..b07a6c3f 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -21,5 +21,54 @@ module.exports = {
     '@typescript-eslint/explicit-module-boundary-types': 'off',
     '@typescript-eslint/no-explicit-any': 'off',
     '@typescript-eslint/no-inferrable-types': 'off',
+    '@typescript-eslint/ban-types': [
+      'error',
+      {
+        types: {
+          String: {
+            message: 'Use string instead',
+            fixWith: 'string',
+          },
+          Boolean: {
+            message: 'Use boolean instead',
+            fixWith: 'boolean',
+          },
+          Number: {
+            message: 'Use number instead',
+            fixWith: 'number',
+          },
+          Symbol: {
+            message: 'Use symbol instead',
+            fixWith: 'symbol',
+          },
+
+          Function: {
+            message: [
+              'The `Function` type accepts any function-like value.',
+              'It provides no type safety when calling the function, which can be a common source of bugs.',
+              'It also accepts things like class declarations, which will throw at runtime as they will not be called with `new`.',
+              'If you are expecting the function to accept certain arguments, you should explicitly define the function shape.',
+            ].join('\n'),
+          },
+
+          // object typing
+          Object: {
+            message: [
+              'The `Object` type actually means "any non-nullish value", so it is marginally better than `unknown`.',
+              '- If you want a type meaning "any object", you probably want `Record<string, unknown>` instead.',
+              '- If you want a type meaning "any value", you probably want `unknown` instead.',
+            ].join('\n'),
+          },
+          '{}': {
+            message: [
+              '`{}` actually means "any non-nullish value".',
+              '- If you want a type meaning "any object", you probably want `Record<string, unknown>` instead.',
+              '- If you want a type meaning "any value", you probably want `unknown` instead.',
+            ].join('\n'),
+          },
+          object: false,
+        },
+      },
+    ],
   },
 };
diff --git a/src/i18n/bg/status.json b/src/i18n/bg/status.json
index 0716dfec..27d38bca 100644
--- a/src/i18n/bg/status.json
+++ b/src/i18n/bg/status.json
@@ -13,5 +13,6 @@
   "BROADCAST_PENDING": "В изчакване",
   "BROADCAST_PROCESSING": "Обработва се",
   "BROADCAST_PUBLISHED": "Публикувано",
-  "BROADCAST_DISCARDED": "Отхвърлено"
+  "BROADCAST_DISCARDED": "Отхвърлено",
+  "OBJECT_ACCEPTED": "Прието"
 }
diff --git a/src/i18n/en/status.json b/src/i18n/en/status.json
index e1d0a905..643b814e 100644
--- a/src/i18n/en/status.json
+++ b/src/i18n/en/status.json
@@ -13,5 +13,6 @@
   "BROADCAST_PENDING": "Pending",
   "BROADCAST_PROCESSING": "Processing",
   "BROADCAST_PUBLISHED": "Published",
-  "BROADCAST_DISCARDED": "Discarded"
+  "BROADCAST_DISCARDED": "Discarded",
+  "OBJECT_ACCEPTED": "Accepted"
 }
diff --git a/src/migrations/1624337501383-AddTownsCountryMunicipalityIndices.ts b/src/migrations/1624337501383-AddTownsCountryMunicipalityIndices.ts
new file mode 100644
index 00000000..478f5b3b
--- /dev/null
+++ b/src/migrations/1624337501383-AddTownsCountryMunicipalityIndices.ts
@@ -0,0 +1,18 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+export class AddTownsCountryMunicipalityIndices1624337501383
+  implements MigrationInterface {
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+        create index "towns_country_id_key" on "towns" ("country_id");
+        create index "towns_municipality_id_key" on "towns" ("country_id");
+      `);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+        drop index "towns_municipality_id_key";
+        drop index "towns_country_id_key";
+      `);
+  }
+}
diff --git a/src/sections/api/town-exists.constraint.ts b/src/sections/api/town-exists.constraint.ts
index 726a0ce5..9e2f72a1 100644
--- a/src/sections/api/town-exists.constraint.ts
+++ b/src/sections/api/town-exists.constraint.ts
@@ -34,7 +34,7 @@ export class IsTownExistsConstraint implements ValidatorConstraintInterface {
 }
 
 export function IsTownExists(validationOptions?: ValidationOptions) {
-  return function (town: TownDto, propertyName: string) {
+  return function (town: TownDto | object, propertyName: string) {
     registerDecorator({
       target: town.constructor,
       propertyName: propertyName,
diff --git a/src/sections/entities/town.entity.ts b/src/sections/entities/town.entity.ts
index 7a0b357c..22a23408 100644
--- a/src/sections/entities/town.entity.ts
+++ b/src/sections/entities/town.entity.ts
@@ -19,7 +19,7 @@ export class Town {
   readonly id: number;
 
   @Column()
-  readonly code: number;
+  code: number;
 
   @Column()
   readonly name: string;
diff --git a/src/sections/sections.module.ts b/src/sections/sections.module.ts
index 2cec453c..4140e0af 100644
--- a/src/sections/sections.module.ts
+++ b/src/sections/sections.module.ts
@@ -54,6 +54,7 @@ import { CityRegionsRepository } from './entities/cityRegions.repository';
     MunicipalitiesRepository,
     CountriesRepository,
     CityRegionsRepository,
+    TownsRepository,
   ],
   controllers: [
     SectionsController,
diff --git a/src/users/api/organization-exists.constraint.ts b/src/users/api/organization-exists.constraint.ts
index 8add9631..dd65b31e 100644
--- a/src/users/api/organization-exists.constraint.ts
+++ b/src/users/api/organization-exists.constraint.ts
@@ -32,7 +32,7 @@ export class IsOrganizationExistsConstraint
 }
 
 export function IsOrganizationExists(validationOptions?: ValidationOptions) {
-  return function (object: OrganizationDto, propertyName: string) {
+  return function (object: OrganizationDto | object, propertyName: string) {
     registerDecorator({
       target: object.constructor,
       propertyName: propertyName,
diff --git a/src/users/api/user-exists.constraint.ts b/src/users/api/user-exists.constraint.ts
index 3afbf9c0..ada33ee5 100644
--- a/src/users/api/user-exists.constraint.ts
+++ b/src/users/api/user-exists.constraint.ts
@@ -24,14 +24,14 @@ export class IsUserExistsConstraint implements ValidatorConstraintInterface {
   }
 
   defaultMessage?(): string {
-    return `User with $property "$value" does not exist!`;
+    return `User with ID "$value" does not exist!`;
   }
 }
 
 export function IsUserExists(validationOptions?: ValidationOptions) {
-  return function (user: UserDto, propertyName: string) {
+  return function (target: UserDto | object, propertyName: string) {
     registerDecorator({
-      target: user.constructor,
+      target: target.constructor,
       propertyName: propertyName,
       options: validationOptions,
       constraints: [],
diff --git a/src/utils/ulid-constraint.ts b/src/utils/ulid-constraint.ts
new file mode 100644
index 00000000..f4b40f03
--- /dev/null
+++ b/src/utils/ulid-constraint.ts
@@ -0,0 +1,33 @@
+import { Injectable } from '@nestjs/common';
+import {
+  registerDecorator,
+  ValidationArguments,
+  ValidationOptions,
+  ValidatorConstraint,
+  ValidatorConstraintInterface,
+} from 'class-validator';
+
+@ValidatorConstraint({ async: true })
+@Injectable()
+export class IsULIDConstraint implements ValidatorConstraintInterface {
+  async validate(id?: string): Promise<boolean> {
+    return typeof id === 'string' && /[A-Z0-9]{26}/.test(id);
+  }
+
+  defaultMessage?(context: ValidationArguments): string {
+    console.debug(context.object);
+    return `${context.property} identifier is not an ULID`;
+  }
+}
+
+export function IsULID(validationOptions?: ValidationOptions) {
+  return function (entity: object, propertyName: string) {
+    registerDecorator({
+      target: entity.constructor,
+      propertyName: propertyName,
+      options: validationOptions,
+      constraints: [],
+      validator: IsULIDConstraint,
+    });
+  };
+}
diff --git a/src/violations/api/violation.dto.ts b/src/violations/api/violation.dto.ts
index 55db90e5..2053beef 100644
--- a/src/violations/api/violation.dto.ts
+++ b/src/violations/api/violation.dto.ts
@@ -46,7 +46,8 @@ export class ViolationDto {
   @Expose({ groups: ['read', 'create'] })
   @Type(() => TownDto)
   @Transform(
-    ({ value: id }) => plainToClass(TownDto, { id }, { groups: ['create'] }),
+    ({ value: id }) =>
+      plainToClass(TownDto, { code: id }, { groups: ['create'] }),
     { groups: ['create'] },
   )
   @IsNotEmpty({ groups: ['create'] })
@@ -111,6 +112,7 @@ export class ViolationDto {
         groups: ['create'],
       },
     );
+    violation.town.code = this.town.id;
 
     let sortPosition = 1;
     violation.pictures = (violation.pictures || []).map(
diff --git a/src/violations/api/violations-filters.dto.ts b/src/violations/api/violations-filters.dto.ts
index b100ff03..9c088fc5 100644
--- a/src/violations/api/violations-filters.dto.ts
+++ b/src/violations/api/violations-filters.dto.ts
@@ -1,23 +1,62 @@
-import { Optional } from '@nestjs/common';
+import { Type } from 'class-transformer';
+import {
+  IsBooleanString,
+  IsInt,
+  IsNumberString,
+  IsOptional,
+  Length,
+} from 'class-validator';
+import { IsTownExists } from 'src/sections/api/town-exists.constraint';
+import { IsOrganizationExists } from 'src/users/api/organization-exists.constraint';
+import { IsUserExists } from 'src/users/api/user-exists.constraint';
 import { PageDTO } from 'src/utils/page.dto';
+import { IsULID } from 'src/utils/ulid-constraint';
 import { ViolationStatus } from '../entities/violation.entity';
 
 export class ViolationsFilters extends PageDTO {
-  @Optional()
+  @IsOptional()
+  @IsULID()
+  @IsUserExists()
   assignee: string;
 
-  @Optional()
+  @IsOptional()
+  @Length(1, 9)
   section: string;
 
-  @Optional()
+  @IsOptional()
   status: ViolationStatus;
 
-  @Optional()
-  author: string;
+  @IsOptional()
+  @IsNumberString()
+  @Length(2, 2)
+  electionRegion: string;
 
-  @Optional()
+  @IsOptional()
+  @IsNumberString()
+  @Length(2, 2)
+  municipality: string;
+
+  @IsOptional()
+  @IsNumberString()
+  @Length(2, 2)
+  country: string;
+
+  @IsOptional()
+  @IsTownExists()
   town: number;
 
-  @Optional()
+  @IsOptional()
+  @IsNumberString()
+  @Length(2, 2)
+  cityRegion: string;
+
+  @IsOptional()
+  @IsInt()
+  @Type(() => Number)
+  @IsOrganizationExists()
   organization: number;
+
+  @IsOptional()
+  @IsBooleanString()
+  published: boolean;
 }
diff --git a/src/violations/api/violations.controller.ts b/src/violations/api/violations.controller.ts
index cf0a97d2..02cffd51 100644
--- a/src/violations/api/violations.controller.ts
+++ b/src/violations/api/violations.controller.ts
@@ -38,7 +38,7 @@ export class ViolationsController {
   @Get()
   @HttpCode(200)
   @UseGuards(PoliciesGuard)
-  @CheckPolicies((ability: Ability) => ability.can(Action.Read, Violation))
+  @CheckPolicies((ability: Ability) => ability.can(Action.Manage, Violation))
   @UsePipes(new ValidationPipe({ transform: true }))
   async index(
     @Query() query: ViolationsFilters,
diff --git a/src/violations/entities/violations.repository.ts b/src/violations/entities/violations.repository.ts
index 4c35b696..f00bd083 100644
--- a/src/violations/entities/violations.repository.ts
+++ b/src/violations/entities/violations.repository.ts
@@ -5,11 +5,13 @@ import { User } from '../../users/entities';
 import { Violation } from './violation.entity';
 import { ViolationUpdateType } from './violation-update.entity';
 import { ViolationsFilters } from '../api/violations-filters.dto';
+import { TownsRepository } from 'src/sections/entities/towns.repository';
 
 @Injectable()
 export class ViolationsRepository {
   constructor(
     @InjectRepository(Violation) private readonly repo: Repository<Violation>,
+    private readonly townsRepo: TownsRepository,
   ) {}
 
   findOneOrFail(id: string): Promise<Violation> {
@@ -32,11 +34,14 @@ export class ViolationsRepository {
   ): SelectQueryBuilder<Violation> {
     const qb = this.repo.createQueryBuilder('violation');
 
-    qb.leftJoinAndSelect('violation.section', 'section');
     qb.innerJoinAndSelect('violation.town', 'town');
-    qb.innerJoinAndSelect('violation.updates', 'update');
-    qb.innerJoinAndSelect('update.actor', 'actor');
-    qb.innerJoinAndSelect('actor.organization', 'organization');
+    qb.innerJoinAndSelect('violation.updates', 'update_send');
+    qb.andWhere('update_send.type = :update', {
+      update: ViolationUpdateType.SEND,
+    });
+    qb.innerJoinAndSelect('update_send.actor', 'sender');
+    qb.innerJoinAndSelect('sender.organization', 'organization');
+    qb.innerJoinAndSelect('violation.updates', 'updates');
     qb.leftJoinAndSelect('violation.pictures', 'picture');
 
     if (filters.assignee) {
@@ -47,44 +52,62 @@ export class ViolationsRepository {
     }
 
     if (filters.section) {
+      qb.innerJoinAndSelect('violation.section', 'section');
       qb.andWhere('section.id LIKE :section', {
         section: `${filters.section}%`,
       });
+    } else {
+      qb.leftJoinAndSelect('violation.section', 'section');
     }
 
-    if (filters.status) {
-      qb.andWhere('violation.status = :status', { status: filters.status });
-    }
-
-    if (filters.town) {
-      qb.andWhere('town.code = :town', { town: filters.town });
-    }
-
-    if (filters.author || filters.organization) {
-      qb.innerJoin('violation.updates', 'update_send');
-      qb.andWhere('update_send.type = :update', {
-        update: ViolationUpdateType.SEND,
+    if (filters.electionRegion) {
+      qb.innerJoin('town.municipality', 'municipality');
+      qb.innerJoin('municipality.electionRegions', 'electionRegions');
+      qb.andWhere('electionRegions.code = :electionRegion', {
+        electionRegion: filters.electionRegion,
       });
 
-      if (filters.author) {
-        qb.andWhere('update_send.actor_id = :author', {
-          author: filters.author,
+      if (filters.municipality) {
+        qb.andWhere('municipality.code = :municipality', {
+          municipality: filters.municipality,
         });
       }
 
-      if (filters.organization) {
-        qb.innerJoin('update_send.actor', 'sender');
-        qb.innerJoin('sender.organization', 'organization');
-        qb.andWhere('organization.id = :organization', {
-          organization: filters.organization,
+      if (filters.country) {
+        qb.innerJoin('town.country', 'country');
+        qb.andWhere('country.code = :country', { country: filters.country });
+      }
+
+      if (filters.town) {
+        qb.andWhere('town.code = :town', {
+          town: filters.town,
         });
       }
     }
 
+    if (filters.status) {
+      qb.andWhere('violation.status = :status', { status: filters.status });
+    }
+
+    if (filters.published) {
+      qb.andWhere('violation.isPublished = :published', {
+        published: filters.published,
+      });
+    }
+
+    if (filters.organization) {
+      qb.andWhere('organization.id = :organization', {
+        organization: filters.organization,
+      });
+    }
+
     return qb;
   }
 
   async save(violation: Violation): Promise<Violation> {
+    if (violation.town && !violation.town.id && violation.town.code) {
+      violation.town = await this.townsRepo.findOneByCode(violation.town.code);
+    }
     await this.repo.save(violation);
 
     return this.findOneOrFail(violation.id);
diff --git a/src/violations/violations.module.ts b/src/violations/violations.module.ts
index bebcd5fd..680ab39b 100644
--- a/src/violations/violations.module.ts
+++ b/src/violations/violations.module.ts
@@ -11,6 +11,7 @@ import { ViolationUpdate } from './entities/violation-update.entity';
 import { Violation } from './entities/violation.entity';
 import { ViolationsRepository } from './entities/violations.repository';
 import { UsersModule } from 'src/users/users.module';
+import { SectionsModule } from 'src/sections/sections.module';
 
 @Module({
   imports: [
@@ -18,6 +19,7 @@ import { UsersModule } from 'src/users/users.module';
     CaslModule,
     PicturesModule,
     UsersModule,
+    SectionsModule,
   ],
   controllers: [
     ViolationsController,