I think we may have missed one vital piece of the thing...............many millions of people are going to have to die to give those left a chance of survival. The over-population of the world by Homo sapiens is the greatest problem we have.
As for films...........I think it may be more like the night of the living dead........or the night of the half-living, drug-deprived, bewidered, clueless, starving and desperate. Once they've driven their cars as far as they can, eaten their bull type terriers/friends/relatives, shot up their last needlefull and finished vomiting, they'll come for us.