On September 24th 2009 Pittsburgh residents and supporters throughout the country (and the world) organize an "unpermitted" march toward downtown Pittsburgh only to be blocked by riot police using LRAD sound cannons and C2 gas (which is a hybrid of pepper gas/spray). Unable to express themselves peacefully by marching the irate crowd is forced to confront police using such lethal weapons as middle fingers, dumpsters, as well as their voices.