I have a bunch of posts about how Mastodon can reduce anti-Blackness. Some of my pinned posts cover it. Here's one:
https://hachyderm.io/@mekkaokereke/110273797004251326
All of the features leading to BlueSky's recent success (Composable moderation, starter packs, quote posts with Safety features) were first proposed by Black users on Mastodon years ago.
https://hachyderm.io/@mekkaokereke/113584007329730843
I post in both places: BlueSky and Mastodon. I don't need to post on Twitter anymore, because the community I care about moved.