The late 1960s and early 1970s were the era of the so-called "student movement". Pasolini, though acknowledging the students' ideological motivations, and referring to himself as a "Catholic Marxist", thought them "anthropologically middle-class" and therefore destined to fail in their attempts at revolutionary change. Regarding the Battle of Valle Giulia, which took place in Rome in March 1968, he said that he sympathized with the police, as they were "children of the poor", while the young militants were exponents of what he called "left-wing fascism". His film of that year, "Teorema", was shown at the Venice Film Festival in a hot political climate. Pasolini had proclaimed that the festival would be managed by the directors.