Didn’t someone quite well-known advise his followers to accuse the other side of what they themselves were doing?
You mean Saul Alinskey? They were doing it before that too.
I read an article online from 1939 where a US Senator Pepper D-Fla accused other Dems and the GOP of being shills for the Chamber of Commerce and trying to bring down America because of their hatred for Roosevelt.
Then Pepper’s faction had the gall, after some walked out, of accuing the walkouts of being intolerant of opposition views.