Mentioning the word "race", "class", or "gender" in a tech setting is a big no-no. They're huge hot-button words.
It scares people and they counter-attack reflexively, without deeply considering the arguments. That's been my experience from work, Reddit, and HN, in any case.
Notice that I'm not saying anything about the correctness of any particular position on a specific issue. It's that the specifics are barely able to be discussed because people are already in war mode.