ATLANTA -- Protests took a violent turn in several U.S. cities over the weekend, with demonstrators squaring off against federal agents outside a courthouse in Portland, Oregon, and forcing police in Seattle to retreat into a station house.
Vehicles were set ablaze Saturday night or early Sunday in California and Richmond, Virginia.
And an armed protester was shot and killed during an anti-police violence protest in Austin, Texas, after police say he approached a car that that had driven through the demonstration and the driver shot him.
Authorities say someone was shot and wounded in Aurora, Colorado, after a car drove through a protest there.
