BLAZING SADDLES (1974)
In order to ruin a western town, a corrupt politician appoints a black Sheriff, who promptly becomes his most formidable adversary.
DR. STRANGELOVE OR: HOW I LEARNED TO STOP WORRYING AND LOVE THE BOMB (1964)
An insane US general orders a bombing attack on the Soviet Union, triggering a path to nuclear holocaust that a war room full of politicians and generals frantically tries to stop.