The Purifiers (2005)

A gang of crime-fighting kung-fu artists try to make their way home through a forbidding urban landscape in this stylish action thriller. In the not-so-distant future, a large city has been taken over by a handful of street gangs who have established their own territories and defend their turf from outsiders with their skills in martial arts. Moses (Kevin McKidd), a powerful figure in the city's underworld, calls a meeting of the town's gang kingpins, and proposes that they all join forces and take control of the city's organized crime syndicate under his rule. The Purifiers, a good-guy gang who strive to keep their neighborhood safe and free of crime, are not interested in working with Moses, but John (Gordon Alexander), their leader, discovers Moses expects full cooperation from everyone...and would rather have the Purfiers dead than have them as rivals. The Purifiers also stars Dominic Monaghan, best known for his work as Meriadoc Brandybuck in the Lord of the Rings trilogy. ~ Mark Deming, Rovi