A woman holding a portrait takes part in a demonstration against the Revolutionary Armed Forces of Colombia (FARC) in Bogota, Colombia, on Dec. 6, 2011. Thousands of people participated in the protest to demand the release of the hostages held by the rebel group. (Xinhua/Hou Xiwen)

Residents participate in a demonstration against the Revolutionary Armed Forces of Colombia (FARC) and demand the release of the hostages held by the Colombian rebel group in Bogota, Colombia, on Dec. 6, 2011. (Xinhua/Hou Xiwen)

Residents participate in a demonstration against the Revolutionary Armed Forces of Colombia (FARC) and demand the release of the hostages held by the Colombian rebel group in Bogota, Colombia, on Dec. 6, 2011. (Xinhua/Sylvia Zarate)