A Clockwork Orange
No filmmaker has ever managed to drum up the amount of controversy that Stanley Kubrick did with A Clockwork Orange came out in 1971. The combination of ultra sex and ultra violence were simply too much for many moviegoers to handle. The film earned an x-rating and was blamed for an uptick in violence by British film critics. In spite of all the controversy, the film was nominated for a best picture Oscar and remains a cult classic.