Anarcho-Primitivists ('Anprims') are people who think that the industrial revolution is a mistake and we should return to monke stick. Many believe that the Neolithic agricultural revolution was also a mistake, and we should return to hunter-gatherers.
That sounds like we should gather them up, find a isolated area (I hear there are some great areas in the russian hinterland that are open), and just leave them there.
AnPrims will actually fight you on the genocide argument, because they don't connect lack or destruction of infrastructure with death of those dependent on it: "They would die in The Collapseā¢ anyway ", because it's a survivalist prepper doomsday cult.