Article Photos: Gunfire erupts at Colo. pot event, 2 wounded 7/11

Youths smoke marijuana at the Denver 4/20 pro-marijuana rally at Civic Center Park in Denver, Saturday, April 20, 2013. Even before the passage in November 2012 of Colorado Amendment 64, which promised the legalization of marijuana for recreational use, April 20th has for years been a celebration of marijuana counterculture, and the 2013 rally was expected to draw larger crowds than previous years. (AP Photo/Brennan Linsley)