March 22, 2010 8:18 pm Flash Mob Turned Violent The flash mob that took over South Street on Saturday caused more than headaches for business owners. US & World Videos 2:31 Wednesday's Child: Matt 2:08 Jewelry store owner shoots would-be robber during Montgomery County heist 10:11 Jersey Shore town puts new curfew in place: The Lineup 1:06 Let a teacher know you appreciate them 0:19 Stretch of Kensington Avenue closed so Philly can clear encampments