The totalitarian rulers try to use a militaristic slang; everything is a war, a battle, a struggle, so that their followers see all those who think different as enemies, in such a way that they are unable to listen to their words, regardless of logic or reason, because after all, they are on different sides.

It is quite effective because after people identify with that group, it is very difficult to leave without feeling treacherous. It's a mental trap.