Mondo cane (1962)
A shockumentary consisting of a collection of mostly real archive footage displaying mankind at its most depraved and perverse, displaying bizarre rites, cruel behavior and bestial violence
Mondo Cane 2 (1963)
The official sequel to the original shockumentary, presenting new and bizarre behavior from around the world, including cruelty, graphic gore, and strange rituals
Goodbye Uncle Tom (1971)
Two documentary filmmakers go back in time to the pre Civil War American South, to film the slave trade