Of course, to you there likely would not seem to be any Leftist purges of history going on, leftists would see it as completely justified and not a purge, as you apparently do, and likely for the same reasons.
Why is it that you see it as justified?
I see nothing political about an allegedly bloody sock.
And being that an ESPN episode of 30 for 30 is not a vital nor even relevant historical document or production, the a absence of Schilling’s sock is not a purge of history.