Philadelphia police attacked by ATV, dirt-bike riders who hurled bricks and bottles at officers Fox NewsWatch: Dirt Bike, ATV Riders Throw Bricks at Philly Cop Cars NBC 10 PhiladelphiaIllegal dirt bike and ATV rallies concern Philadelphians CBS PhiladelphiaDirt bike rider wanted for throwing brick at police SUV in Northern Liberties PhillyVoice.comPhiladelphia police search for suspect who threw brick at patrol car during ATV incident on Delaware Avenue WPVI-TVView Full Coverage on Google News