So is this sort of thing only a serious, diagnosable condition when it happens to Democrats, or is it a serious, diagnosable condition that only happens to snowflakes, so Republicans are immune?
I've been politically aware since Carter. My one data point of anecdotal evidence says this only happened during Reagan, Bush, and Trump. I guess that still doesn't answer your question though.
I have wondered if the Reagan years would have actually been worse than the Trump years, had there been social media at the time. Back then, it was mostly just what you read in your local newspaper and what you saw in around an hour of evening news. CNN and the 24/7 cycle was brand new at the time with relatively few viewers (at least compared to today's numbers).