Films like 'A Clockwork Orange' (1971), 'Salò, or The 120 Days of Sodom' (1975), and 'Cannibal Holocaust' (1980) have faced extensive bans and censorship due to their depictions of graphic violence, sexual content, and disturbing themes, with 'Cannibal Holocaust' even leading to its director, Ruggero Deodato, facing charges of indecency and murder due to its realistic portrayal.