unruly crowd

Translations
неуправляемая толпа
The police struggled to control the unruly crowd at the concert.
Полиция с трудом сдерживала неуправляемую толпу на концерте.
Definitions
A group of people who are disorderly, disruptive, or difficult to control, often exhibiting chaotic behavior that can lead to disturbances or unrest.