Officers injured as "Kill the Bill" protest against bid to boost U.K. police powers turns violent

London — Protests continued across the U.K. over the weekend against a proposed law that would increase police powers. Clashes between some demonstrators and police in the city of Bristol left 20 officers injured, two of them seriously, according to the region's police force.

Videos from Bristol showed multiple police vans on fire, and Avon and Somerset chief constable Andy Marsh told Britain's Guardian newspaper that some officers had been trapped in a building as people shot fireworks and other projectiles at them, damaging the protective glass on the front of the building. Some demonstrators reportedly threw stones at officers, and one officer suffered a punctured lung after being stomped on. Marsh told The Guardian that someone defecated on the ground in front of police. Seven people have so far been arrested.