Helmeted police in riot gear turned out on Friday evening in a tense confrontation with protesters in downtown Los Angeles, after a day of federal immigration raids in which dozens of people across the city were reported to be taken into custody.

Los Angeles faced a day of riots Friday after a new wave of federal Immigrations and Customs Enforcement operations, resulting in violence and the deployment of riot police. Videos show rioters using hammers to break off concrete from nearby structures to create projectiles to hurl at officers.

It came after federal raids in the city on Friday in which agents reportedly took dozens of people into custody.