Thousands of people took to the streets in US cities on Friday to denounce the fatal police shootings 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 on Friday evening, and events also were planned for San Francisco and Phoenix. Local media reports did not indicate any immediate instances of major clashes or injuries. They railed against police brutality and the deaths of two men fatally shot by police, while also grieving for the five police officers slain while patrolling a Black Lives Matter protest in Dallas late Thursday. In Washington, District of Columbia, people gathered outside the White House and in Philadelphia they came together outside City Hall. Thousands marched in Atlanta in what appeared to be the largest demonstration, chanting and waving signs demanding justice, video posted to social media showed. Footage from local broadcasters showed the massive crowd facing off with dozens of police vehicles that were stopped on a local interstate highway. Snipers open fire on police in Dallas, killing five officers and wounding seven more Atlanta Mayor Kasim Reed tweeted that the rally was largely peaceful, though about 10 people had been arrested. Some marches brought heightened security as the shooting in Dallas raised fears that other public gatherings could be targeted. Among those marching in Baltimore was resident Tay Parker, 32, who said the week’s violence hit her especially hard. Parker, who is black, said she worries about her three brothers being racially profiled, and now fears for the safety of her girlfriend, a Maryland Transit Authority police officer. “She’s judged for being in that uniform the same way people are judged for the color of their skin,” Parker said. The protests in some cities were smaller than Thursday night, when crowds swelled to protest the deaths of Sterling and Castile. But in other areas the demonstrations brought large groups. Hundreds block traffic in NYC’s Times Square as protesters across US mass after police shooting of black man Friday was the second day of widespread demonstrations against use of force by police in the wake of the fatal shootings of 32-year-old Philando Castile near St Paul, Minnesota and 37-year-old Alton Sterling in Baton Rouge, Louisiana. “This is no time to be calm. You would be a fool to be calm if you are under genocide,” Reverend Francys Johnson, president of the Georgia NAACP, told the crowd. “Racism is not a black problem, it’s a white problem.” Castile was killed by police during a traffic stop late on Wednesday, and his girlfriend posted live video on the Internet of the bloody scene minutes afterward. Sterling was killed during an altercation outside a convenience store with two white police officers. Graphic video of that incident caused an outcry on social media. The two shootings stoked racial tensions that have flared repeatedly across the country following the 2014 killing of Michael Brown, an unarmed black teen, by a white police officer in Ferguson, Missouri. Thursday’s demonstrations were largely peaceful until gunfire erupted at a Dallas rally that was winding down. Additional reporting by The Washington Post