There's a scene in the ghetto building where SWAT was sent to infiltrate  Puerto Rican bandits (one of which is Pittsburgh actor John Amplas, of Marvin (1977) fame) who had holed up there. There's this grizzly maze of crime and the undead as the innocents are caught in between. The movie lands us into the thick of hysteria where one officer is being mentored by Roger before engaging the bandits but a bullet hits him right in the forehead killing him instantly. Woolley, this bulbous maniacal racist with pent up rage and a machine gun--lethal concoction, for sure--goes right into shooting, not particularly caring where he aims besides ducking his fellow SWAT members. A head explodes when Woolley kicks open the door to an apartment shooting a man inside. Was it a zombie or just an unfortunate occupant?

The priest who has seen crime, violence, brutality and the dead walk (and eat) offers his theory to Roger and Peter:

Many have died last week, on these streets. In the basement of this building you will find them. I have given them the last rites. Now you do what you will. You are stronger than us. But soon I think they be stronger than you. When the dead walk, señores, we must stop the killing...or lose the war.