SAN FRANCISCO - Thousands took to the streets of US cities on Friday to denounce the fatal shooting by police of two black men this week, marching the day after a gunman killed five police officers watching over a similar demonstration in Dallas.
Protesters clogged roadways in New York City, Atlanta and Philadelphia, and events in San Francisco and Phoenix also drew large crowds.
Six people were injured and three were arrested in Phoenix. where police in riot gear used pepper spray on protesters, some of whom threw rocks at officers, the Phoenix Police Department said in a statement.
Videos posted online showed protesters also gathering in Baton Rouge, Louisiana, where 37-year-old Alton Sterling was fatally shot by police early on Tuesday.
The largest demonstration appeared to be in Atlanta, where thousands marched, chanting and waving signs demanding justice, video posted to social media showed. Footage from broadcasters showed a large crowd facing off with dozens of police vehicles blocking a local interstate highway.
Atlanta Mayor Kasim Reed tweeted that the rally was largely peaceful, though about 10 people had been arrested.