DENVER, CO - APRIL 20: Tyler Shumway of Aurora, Colorado lights up a joint as thousands gathered to celebrate the state's medicinal marijuana laws and collectively light up at 4:20 p.m. in Civic Center Park April 20, 2012 in Denver, Colorado. Colorado goes to the polls November 6 to vote on a controversial ballot initiative that would permit possession of up to an ounce of marijuana for those 21 and older. (Photo by Marc Piscotty/Getty Images)
