Tribalism is ingrained in the human psyche. If you're not noticing it, that's probably a bad sign.
To quote you: If you are not noticing that, that's probably a bad sign (for what? Can you explain that?)
From cursory observation of various political engagements around the world, it's all very similarly tribalistic - whether it be over the top rhetoric that appeal to emotion - or in some cases violent. Heck look at the rise of the far right support in various EU states. Politics is very often personal, so people will take it personally.
The only real difference is America takes up all the media oxygen given it's position in the world stage.