I've never heard of a democratic, or even republican (beyond trump) ask for personal oaths of loyalty or openly purge government institutions based on personal loyalty, acts of revenge, etc.
As far as the current administration goes, they see simple statements of scientific fact as false / evidence of "bias". That's not one side or another, that's just ignorance.
"It's ok when I do it, because I think they did." Is just and endless escalation by design. Those in power will always find a reason to justify their actions because it benefits them ... not because anyone else actually did the thing.