I'm only getting second-hand reports, but I'll say it in case there's anyone listening that needs to hear it:
When people speak of racism, they are talking about a system - a specific system, which demonstrably exists today, and which has been a very consequential and deeply-connected component of the modern period.
If you find yourself wanting to talk about racism-like systems in other times, consider carefully whether you are in a situation where that would be appropriate, relevant, and respectful.
This Mastodon instance is for people interested in technology. Discussions aren't limited to technology, because tech folks shouldn't be limited to technology either!