MEXICO 68 MASSACRE

People carry machetes as they march in downtown Mexico City, Sunday, Oct. 2, 2005, to mark the 37th anniversary of the 1968 massacre of student protesters known as the Tlatelolco massacre, after the city square where it occurred. Dozens of students and other civilians died on Oct. 2, 1968, when police and military officials opened fire on them during a government protest. Officials estimated that about 25 people died, while activists contend that as many as 350 were killed. (AP Photo/Roberto Velazquez)