One scene is the star has saved a prostitute from the pimp in a neighboring room at a seedy motel in a town where the cops are crooked too. I believe the manager was a small person (midget). In the end the star blows up the hotel & drives off with the prostitute.
It sounds like “Payback” with Mel Gibson. http://www.imdb.com/title/tt0120784/?ref_=fn_al_tt_1