Hatred is the core of many/most DU-folks being.
I find this behavior among the DUmpasses somewhat interesting, yet pitiful.
My boys are teenagers at this point. One of them wants to talk politics frequently, the other is mostly either uninterested, or just keeps things to himself as he tends to steer away from complex issues that may lead to arguing... he's mostly a passive type. I never engage with them regarding general politics, especially the "this candidate sucks because..." type of conversations or even casual comments.
We talk about ethics in general, explain this v/s that concepts, why some things work and others are pie in the sky dreams... etc.
No, kids this age aren't dumb, but they completely lack the wisdom that real life compiles for us, whether we like it or not, through time and experience. We don't talk republican v/s democrat or any other such nonsense. We focus on freedoms, rights, Constitution, law, and overall civility. And all of these topics, nearly without exception, build a solid, law-abiding, and civil conservative who recognizes the rights of others as being equal to his own.
We aren't into brainwashing our kids, even with religion... we want them informed about life, and we want them to make their own decisions eventually, but based on real life logic and reason. Only more time will tell if this is a proper approach, but in the end, we want them to be comfortable with what they believe and support, and not just "dad said so"... which eventually leads them to question everything later down the road.