John McTiernan's debut NOMADS bridges past and present— a Gothic horror set in LA, where evil spirits/bikers lurk.
SLICE is nothing special, though it's full of commentary about modern social divisions, urban renewal, and racists.
Generally disregarded by the mainstream, John Carpenter's THEY LIVE ('88) is a prophetic piece of sci-fi cinema.
STREET TRASH is just a B-movie with nothing to say. Or, maybe it says a lot of things about NYC in the 1980s. Maybe?