For instance, the Civ games are basically Whig History: The Game, presenting liberal capitalism as the ideal end point for all societies. It even includes uncivilized "barbarian tribes" whose sole purpose is to be exterminated so you can take their land for the glory of capitalism.
Fair, but I mean nobody's going to do that to their loved ones or someone just acting a bit strange at a bar. That takes build up and by the time it gets to calling the cops they'd already have chunked someone's arm or leg or whatever.
Also fortunately that's completely outside my experience as people with guns don't get sent to see disabled people (or anyone) and the cops here are trained for 2-3 years. Not to say they aren't shits, but at least comparatively they're not usually psychos to the disabled.
Hmm. You've got a good point. I do think there is a very American grounding for a lot of American made Zombie movies. Things like the ending of the original Night of the Living Dead are a strong commentary on contemporary America, for instance, that would need to be reworked at least a bit to make sense in other contexts.
The whole idea of zombie movies seems to play into gun culture and Shaun of the Dead demonstrated quite well that the zombies have to but utterly useless to work in other settings. That or you can do 28 days later and demonstrate complete and total societal collapse in just 4 weeks.