DENVER, CO - APRIL 20: An estimated 10,000 people are expected to gather in Civic Center Park in Denver, Colorado on April 20, 2012 to celebrate the state's Medicinal Marijuana laws and collectively light up at 4:20pm. On Nov. 6, Colorado may become the first state to legalize marijuana with the passing of Amendment 64, a controversial ballot initiative that would permit up to 1 ounce of possession for those 21 and older. (Photo by Marc Piscotty/Getty Images) *** Local Caption *** Person
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