You're being disingenuous. There will be some bad actors in any large organization. That doesn't make stay-behind organizations in general a bad idea. Sometimes younger people today fail to realize that Communism once represented an existential threat to human civilization.
If your ideology is "it's ok to kill any amount of people to avoid someone I don't like to be democratically elected somewhere in the world" I don't think we will ever agree.
1. They don't just kill people you don't like, they kill randos with bombs
2. People you don't like don't deserve mass murder anyway
3. Killing communists is what nazis do. In fact they're so good at killing they killed much more people than any communist ever did. If your morals align with the nazi party, you're probably a nazi and you should REALLY REALLY REALLY do some serious thinking.
There you go again, lying and trying to put words in my mouth. Opposing communism does not equate to supporting Nazism (or any other "ism"). Nazis and communists are roughly equivalent from a moral perspective in that they both represent existential threats to humanity, and both groups should be eliminated.