may day

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."

Ramon Espinosa/AP

People hold up images showing Fidel Castro, second from right, Venezuela’s late President Hugo Chávez, centre, and Cuban revolutionary Ernesto ‘Che’ Guevara, bottom left and right, during a May Day march in Revolution Square in Havana, Cuba. The image of Chávez carries the words in Spanish ‘Chávez: Our best friend.’

Gay rights activists clasp hands as they march during a tradition May Day rally in St.Petersburg, Russia, Wednesday, May 1, 2013.  The poster reads : 'We demand the abolition of the homophobic law!'.

Dmitry Lovetsky/AP

Gay rights activists clasp hands as they march during a traditional May Day rally in St Petersburg, Russia on Wednesday. The poster reads: ‘We demand the abolition of the homophobic law!’

Masked policemen take cover behind shields during clashes at a May Day demonstration on May 1, 2013, in Istanbul.  Several people were injured on Wednesday as Turkish riot police used water canon and tear gas to disperse hundreds of protesters who defied a May Day ban on demonstrations in a central part of Istanbul.

Ozan Kose/AFP

Masked police officers take cover behind shields during clashes at a May Day demonstration in Istanbul. Several people were injured on Wednesday as Turkish riot police used water canon and teargas to disperse hundreds of protesters who defied a May Day ban on demonstrations in a central part of Istanbul, Turkey.