Maniac Cop (1988)

American action/slasher film from 1988 directed by William Lustig.

A uniformed officer brutally murders innocent people in the streets of New York. The young cop Jack Forrest suddenly becomes the main suspect when his wife is murdered. Officer Frank McCrae investigates the tragic murders, and suspects a conspiracy within his own ranks - all the while the number of dead rises. This inhuman Maniac Cop must be stopped!

Featuring Bruce Campbell, Tom Atkins, Laurene Landon and Richard Roundtree, among others.