Clowns pose for a photo as they rally for peace during the 18th Latin American clown convention or “Fair of laughter” at Mother Monument in Mexico City

Clowns pose for a photo as they rally for peace during the 18th Latin American clown convention or “Fair of laughter” at the Mother Monument in Mexico City October 23, 2013. The convention will be held from October 21 to 24 in Mexico City. REUTERS/Edgard Garrido (MEXICO – Tags: SOCIETY)