People hold up images showing Fidel Castro, second from right, Venezuela's late President Hugo Chavez, center, and Cuba's revolutionary hero Ernesto 'Che' Guevara, bottom left and right, during a May Day march in Revolution Square in Havana, Cuba, Wednesday, May 1, 2013. The image of Chavez carries the words in Spanish "Chavez : Our best friend." (AP Photo/Ramon Espinosa)

Associated Press
People hold up images showing Fidel Castro, second from right, Venezuela's late President Hugo Chavez, center, and Cuba's revolutionary hero Ernesto 'Che' Guevara, bottom left and right, during a May Day march in Revolution Square in Havana, Cuba, Wednesday, May 1, 2013. The image of Chavez carries the words in Spanish "Chavez : Our best friend." (AP Photo/Ramon Espinosa)
People hold up images showing Fidel Castro, second from right, Venezuela's late President Hugo Chavez, center, and Cuba's revolutionary hero Ernesto 'Che' Guevara, bottom left and right, during a May Day march in Revolution Square in Havana, Cuba, Wednesday, May 1, 2013. The image of Chavez carries the words in Spanish "Chavez : Our best friend." (AP Photo/Ramon Espinosa)
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