I have seen engineers on programming meme communities that identify themselves as Microsoft employees saying deeply disgusting racists jokes such as hanging Native Americans and African Americans from "red-black trees", and making fun of an internal linting tool that deals with terminology like "master/slave".

Because those jokes crossed the line and I confronted them and now you won't find them (they deleted them).

I know that behind the veil of strict HR policy compliance there are a lot of racists there.

And I am afraid the problem is not Microsoft specific... open source projects have this problem too.

For example the former Debian Project Leader, Sam Hocevar has been accused of being part of GNAA (not going to expand the acronym, you can look it up). Here he is wearing a GNAA t-shirt: https://commons.wikimedia.org/wiki/File:Sam_Hocevar_Solution...

You can also read this thread to understand how racists are handled in the Debian project: https://debian-vote.debian.narkive.com/2R2X1Ga7/question-for...