The zombie legend was originally restricted to undead creatures wandering around with their arms out and working as slaves in Bella Lugosi movies until George Romero changed all that n the 50's with a low budget movie, Night of the living dead shot in New Jersey, that depicted the undead as aggressive creatures. Subsequent Hollywood stuff created the brain eating zombie hoard and that's where it stands today. My personal (and only) favorite is "Return of the living dead" that has a humorous plot instead of shock splatter.