Here's a possibility:
Nightbreed (1990) starring Craig Sheffer, Anne Bobby, David Cronenberg, Charles Haid, Hugh Quarshie, Hugh Ross, Doug Bradley
IMDb synopsis: A community of mutant outcasts of varying types and abilities attempts to escape the attentions of a psychotic serial killer and redneck vigilantes with the help of a brooding young man who discovers them. IMDb review: The plot focuses on Aaron Boone, who has recurring nightmares about a society of monsters living under a cemetery. Is he making it up, or are they real and calling to him? His psychiatrist convinces him that he's a murderer, a slayer of families. Troubled and suicidal, Boone seeks refuge in Midian, but the monsters don't want him at first. He is also tracked by his girlfriend, Lori, who refuses to give up on him even after he dies and comes back cold and monstrous. But, Decker isn't about to let Boone continue. He raises the locals on an all-out assault on Midian. // The film is based on the novel "Cabal" by Clive Barker, who also wrote the screenplay and directed.
Here's Part 1 on YouTube: http://www.youtube.com/watch?v=a7W29-GBNC8