Tvert and Vicente pose in their offices in Denver

 
Tvert and Vicente pose in their offices in Denver
Mason Tvert (L) and Brian Vicente pose in their offices in Denver, Colorado, May 25, 2012. The two are the leaders of a campaign calling for the legalization of an ounce of marijuana, and creating a legal framework so the drug's sale could be regulated and taxed by the state as alcohol is today. REUTERS/Rick Wilking