@aburka And I say "carrying water for" because it would be different if they'd been like "holy shit, we had no idea, we've banned him now and are reaching out to all his victims to make things right" - no one would have "harassed" them then.
But as soon as you're like "naw he's cool he's my friend" or whatever, you forfeit any entitlement not to be treated like the shitstain you are.