Democratic National Convention protesters hit the streets of Philadelphia late Wednesday night and broke through security fencing around the Wells Fargo Center.
Video showed the aftermath as Philadelphia police officers pushed back a rowdy crowd, some of whom chanted, "The whole world is watching!" — a rallying cry of protesters during the violent 1968 Democratic National Convention in Chicago.
WXTF-TV reported that one person got through the fence and that police said up to a dozen people were taken into custody. In addition, police said a woman was burned during an attempted burning of the American flag.
This story has been updated.