Haitian protest against the United Nations peacekeepers on November 18, 2010 in Port-au-Prince. Gangs of angry Haitians trawled Port-au-Prince as violence aimed at UN peacekeepers blamed for the cholera crisis spread to the capital after deadly rioting in the north. Organizers had urged people to vent their anger at the United Nations and the Haitian authorities in a demonstration at a main square by the presidential palace, but what transpired was more like urban guerrilla warfare. AFP PHOTO / HECTOR RETAMAL (Photo credit should read HECTOR RETAMAL/AFP/Getty Images)