The PMT had its origin in the years of Student Movement of 1968 , especially the Tlatelolco massacre , and with the participation of noticeable intellectuals and social fighters as Heberto Castillo , Carlos Fuentes , Octavio Paz and Luis Villoro it gave origin of the National Committee of Auscultation and Coordination . After the exit of some of these personalities , it was constituted as a political party in 1975 , but would only manage to obtain its registration in 1984 , participating in the Legislative elections of 1985
Tlatelolco massacre
Tlatelolco massacre
Mexican Workers' Party