Although the economy continued to flourish for some , social inequality remained a factor of discontent . Moreover , the PRI rule became increasingly authoritarian and at times oppressive in what is now referred to as ' Mexico 's dirty war ' ( see the 1968 Tlatelolco massacre , which claimed the life of around 300 protesters based on conservative estimates and as many as 800 by the protesters )
1968 Tlatelolco massacre
Tlatelolco massacre
Mexico