I've been mulling something over in my brain for some time now and finally am getting the thoughts together to ask: Do you have any recommendations for creating/writing/depicting Black side characters specifically? As in, are there any major pitfalls or concerns you have when you see that a Black character is going to be a supporting character to a non-Black protagonist?
(I ask not because Black people don't deserve to see themselves as the protagonist, but because I recently remembered that the majority of short stories I wrote in middle/high school had Black MCs (12-year-old white kid had a revelation about how white most media is and decided to fix it themself. Whoops). Fortunately kid me sidestepped a lot of awful pitfalls because most of those characters were inspired by and written for/with my real life Black friends--but it's occurred to adult me that the solution to sidelining characters of color for a white protagonist can't always be "just don't make the MC white", especially in stuff I'm working on alone. It's weird if I, as a white person, never write from the POV of a white person.)
This was a bit of a ramble, the question is really the important part--I just wanted to clarify that this isn't coming from a place of not wanting to write Black protagonists but rather from a place of recognizing a potentially concerning pattern in my own writing (and don't worry, if any of those high school stories ever see the light of day again, I'm gonna hire sensitivity readers).
Tbh, my advice is the same! I recognize that not every Black character is gonna be the MC. But being a side character doesn't mean you have to be a plot device, a flat 2D outline meant to bolster whoever the MC is.
I might not need to know what your Black side character does every five seconds, but I do need to understand that they exist in a world of their own that isn't dependent upon the MC! I usually solve this problem by offhand mentioning things in scene that they are doing, or had to do, or will be doing. Writing their thoughts out, their feelings. Are they allowed to disagree? Are they allowed to show their own flaws? Do they have their own issues that might come up, that show they have a life?
I will clarify, I assume you mean side as in still important but not THEE important ones. Because some side characters are there for camera fodder. Just make sure all of those ones aren't Black while no one else is. But yeah, my concerns usually are when a Black side character becomes the Mammy, the Magical Negro, and all those other examples in my stereotypes lessons that are there to baby a nonblack MC and then die or something.