Would you please also not use HN for ideological flamewar? It's what we're most trying to avoid here, really.

https://news.ycombinator.com/newsguidelines.html

Because that's what has happened at the extreme left (Stalin, Mao). If someone ignores the evils of fascism, would you not inform them?

When somebody makes a post about purchasing something using money, do you wade into the discussion to call them slavers and murderers because of capitalism's unsavory history?

Projection. You’re the one who stated that left wing extremists “aren’t posting anything abhorrent” on social media. Forgive me if I consider “death to capitalists” abhorrent.