Social psychologists have long understood that merely identifying with a group in competitive contexts can lead people to view those outside the group less favorably.
Ah yes. It's because they are on the other team that proud Trump supporters are being ostracized. The fact Trump and his allies have blatantly advertised goals that are dangerous, damaging, bigoted, hateful, and generally horrific... and their poorly hidden goals are even more so... has nothing to do with it. It's just competition bringing out the worst in the rest of us.
Lol, I fixed the auto capitalization but didn't notice the spelling change.