A little-seen 1973 film by George Romero (Night of the Living Dead), whose excellent work combines intense, fleshy horror with elements of fierce satire and surprisingly appropriate socioeconomic analysis–all of which is pretty impressive for a shoestring producer from Pittsburgh. The residents of a small town in Pennsylvania turn homicidal when a tankload of government nerve gas is accidentally unleashed. White-suited SWAT teams from the Department of Defense are sent in to mop up the hapless locals, including a little old lady who impales her victims on knitting needles. R, 103 min.