UN troopsand Liberian riot police take position on November 7, 2011 in Monrovia. Police shot dead up to four protestors during a rally in Monrovia, opposition leaders said on November 7 on the eve of a run-off vote they accuse President Ellen Johnson Sirleaf of rigging. Shooting erupted after anti-riot police and UN peacekeepers using water cannons tried to block an unauthorized march by thousands of demonstrators supporting the opposition challenger Winston Tubman of the Congress for Democratic Change (CDC) party. AFP PHOTO / ISSOUF SANOGO (Photo credit should read ISSOUF SANOGO/AFP/Getty Images)
