Our society has become this way for 2 main reasons imo. We have been trained by the media, both social and professional to personally fear and hate those that disagree with us. And, people have slowly lost core values in the name of progressive, moral relativism. Combine the 2, add the internet, and boom, there you go.
And enter nonoise. Like a moth to flame. Political leanings have nothing to do with views on moral relativism. The right simply acknowledges its existence.
It's all very simple actually...If any of ya had any conversations with your daddies and your grand daddies, it would become obvious how much worse than a piece of chicken the American workforce was treated back in the days. If one were to explore the culture of abuse that existed in the European continent (going further back) before the abused got on a boat and ran to America, it would become even more obvious how much the few in power luv to squeeze the rest endlessly to add more billions to their existing billions.
The rightwing has always had a strategic weapon...always blame it on the other race with a different 0.2mm thickness of skin pigment...it is always the other race's fault, never the good ol' boy (who looks like ya) who's the one squeezing you to death, whenever he's given the chance. And thus, the fools congregate and agree to removal of all the safety nets (hardfought and put in place by their progressive daddies and grand daddies)...And thus, the fools would recreate the hell from a 100 years ago in a heartbeat because their tribal selves fear the other race so much, whom they've also victimized endlessly/for most of their lives.