There's a nice review here https://www.fifthestate.org/archive/416-spring-2025/how-political-violence-resistance-was-represented-in-1960s-1970s-arthouse-cult-films/

"Genre is no object for the films covered. Neither is the often-thin line between the grindhouse and arthouse. Contributors look at films from the somewhat mainstream spaghetti Westerns to the much more obscure Indian gangster movies. Political violence and resistance are a large umbrella that many films can, and do, fit into. The publisher’s description notes that “the book examines film-making movements like the French, Japanese, German, and Yugoslavian New Waves; sub-genres like spaghetti westerns, Italian poliziotteschi, Blaxploitation, and mondo movies; and films that reflect the values of specific movements, including feminists, Vietnam War protesters, and Black militants.” At the same time that Hollywood was pushing saccharine films in the mid-1960s like The Sound of Music, outsiders were crafting films that went far beyond even the supposed rebelliousness of the New Hollywood of Coppola and Scorcese."