In many other capitalist countries , struggles against dictatorships , state repression and colonisation were also marked by protests in 1968 , such as the beginning of the Troubles in Northern Ireland , the Tlatelolco massacre in Mexico City and the escalation of guerrilla warfare against the military dictatorship in Brazil . Countries governed by communist parties had protests against bureaucratic and military elites . In Eastern Europe there were widespread protests that escalated particularly in the Prague Spring in Czechoslovakia . In response , Soviet Union occupied Czechoslovakia , but the occupation was denounced by the Italian and French communist parties and the Communist Party of Finland . Few western European political leaders defended the occupation , among them the Portuguese communist secretary-general Álvaro Cunhal . along with the Luxembourg party and conservative factions of the Communist Party of Greece
Tlatelolco massacre
Tlatelolco massacre
Socialism