They Say I'm a Communist(1951)

Original title: Dicen que soy comunista

A worker overwhelmed by the economic crisis and the cost of living is accidentally propaganda of a political party, apparently from left, who convinces him to join their ranks and defending the working class. After entering through a ritual as mysterious as typical, you will realize demagoguery and arrangements existing between union leaders to maintain the status quo unchanged and profit from mafia practices.