CITY OF MEXICO, MEXICO - MAY 07: People march during the XI Global March for the legalization of marihuana on May 07, 2011 in Mexico City, Mexico. (Photo by Alejandro Godinez/Clasos.com/LatinContent via Getty Images)
CITY OF MEXICO, MEXICO - MAY 07: People march during the XI Global March for the legalization of marihuana on May 07, 2011 in Mexico City, Mexico. (Photo by Alejandro Godinez/Clasos.com/LatinContent via Getty Images)