No positive messages. Human life has no value, as evidenced by the main characters' non-reaction to their actions causing friends' deaths. No one seems to learn anything.

Tons of gory zombie-movie violence: eating of faces, disembowelments, severed limbs, rotting flesh, gushing blood sprays, shoot-outs, knifings, the works. Plus sexual intimidation and a full-on rape attempt.

The film teases but doesn't show live nudity, but there's a flash of a nude pin-up on a magazine cover. The female lead is attacked by zombies in the first scene; somehow her shirt manages to fly wide open, revealing her bra. Near-nudity in a scene in which a couple starts to hook up.

An assortment of "f--k"s, plus "s--t," "d--k," and non-explicit sexual references.

Humvees.

A few toasts to fallen comrades.