Not really, it’s more people who identify as Marxist-Leninists or leftist in general who deny, downplay, or outright praise the genocidal actions of totalitarian regimes like the USSR, the PRC, etc, and/or who today will support countries like Russia in the ukraine-russia conflict (explicitly or more overtly) simply because they hate the US and NATO.

The origins actually predate Tiananmen square, but I can’t exactly remember if it was people who praised the actions of the USSR during the Prague spring or the Hungarian revolution.