
First of all, the allegation that the film is political propaganda is pure bollocks. Despite the mockery of extreme right-wingers and 'Obama-as-Hitler' ridiculousness, "God Bless America" proves to be, like it's protagonist Frank, largely politically neutral.
By the beginning of the film, Frank (Joel Murray) is enraged and psychotically angry. Drinking and fantasizing about killing the inconsiderately loud next-door couple and their baby does little to quench his increasing blood lust.