People walk past a billboard taht reads in Spanish Everything for the Revolution, with images of revolutionary leaders, from left, Julio Antonio Mella, Ernesto Che Guevara and Camilo Cienfuegos in Havana, Sunday, July 25, 2010. The Cuban government has said nothing about whether Cubas former leader Fidel Castro will be on hand for the main celebration that will mark the 57th anniversary of the July 26, 1953, when the Castros led an attack on the Moncada army barracks in the eastern city of Santiago and a smaller military outpost in the nearby city of Bayamo. The operation failed but Cubans consider it the beginning of the revolution that culminated with dictator Fulgencio Batistas ouster on New Years Day 1959. (AP/Franklin Reyes)