Protesters use an aerosol can and a lighter as a make-shift flame thrower against riot police during clashes that erupted at a march to mark the 1968 Tlatelolco plaza 'massacre' in Mexico City, Thursday, Oct. 2, 2008. On October 2, 1968, ten days before the 1968 Summer Olympics celebrations in Mexico City, hundreds of student demonstrators were killed by men with guns and soldiers.
(AP Photo/Eduardo Verdugo)