(CNN) – Protesters across the nation marched, engaging in confrontations in some spots but mostly peacefully elsewhere, decrying police brutality over the killing of two African-American men this week.They wept, held signs and chanted, “black lives matter.” Tensions ran high between police and protesters in some cities, resulting in dozens of arrests in upstate New York, a handful of reported arrests elsewhere and scattered scuffles. The Friday protests came a day after a sniper killed five police officers during a demonstration in Dallas.
In Baton Rouge, where Alton Sterling was fatally shot Tuesday, protesters marched near police headquarters. About 300 protesters faced officers in riot gear under heightened tensions. Community leaders and local officials tried to calm down the crowd by forming a line between police and protesters. Tempers flared when several protesters hurled plastic bottles of water and cups of ice at police.
In Atlanta, a crowd of about 2,000 people blocked a downtown interstate ramp during a march organized by the NAACP. The protest resulted in two arrests by Georgia State Patrol, according to Atlanta Police spokeswoman Elizabeth Espy. Atlanta Mayor Kasim Reed, who attended the march, told CNN’s Don Lemon that peaceful protesters in the city are practicing their First Amendment right.