Kinjite, a Charles Bronson movie. This really gives Mandingo a run for it's money for the most offensive movie I've ever seen. Bronson really made some awful movies in the 80's and I think this was the last of that string.
There is a pretty hilarious error in this movie too. Bronson and his partner are hanging a guy over a balcony by his feet and accidentally drop him and he lands in the pool below. When they dropped him, he was a black man and when he was floating in the pool, he was a white man.