Several hundred people have gathered at Union Square in Manhattan to protest the death of Freddie Gray, a Baltimore man who was critically injured in police custody.
The protesters chanted "no justice, no peace" and "hands up, don't shoot" Wednesday night as dozens of police officers watched.
A police helicopter hovered overhead and a police loudspeaker warned the protesters that they would be arrested if they marched in the street.
One of the protesters said "the police have become out of control."
Gray's death from a spinal injury while in custody has led to protests, rioting and looting.
Copyright 2015 The Associated Press.