DENVER, CO - OCTOBER 29:  A policeman in riot gear arrests a protester at the 'Occupy Denver' camp on October 29, 2011 in Denver, Colorado. Following a march by protesters, police tried to tear down some newly-erected tents at the encampment and scuffled with demonstrators. Police arrested about a half dozen people and pepper-sprayed others during the melee.  (Photo by John Moore/Getty Images)