Mandinga (Ultraje a una raza)

Incredibly hilarious mid-70's Italian Rootsploitation with lots of non-consensual S&M, lesbian sex, gratuitous racial cruelty etc...Few redeeming cinematic qualities, except for the fairly cool theme music with dubby "African" drums and flute. Brilliant sample dialog:

White Slave Owner (to White Plantation Manager): "You're so dumb, I'll bet you forgot to interrogate that n****r midwife!"

White Plantation Manager: "Not only did I interrogate her, I did it so well she died before I could get any answers from her!"

All the black actors have 70's afros, and say "yes, massa" in a high-pitched voice. The female lead has sex with everybody on the plantation. 10 Stars for fans of tasteless sleaze.