That one is a bit of a head scratcher.

In the video from the third tweet in the article there were several ARs visible with no optic or sights. There was also what was either an airsoft rifle or one of the very few FAMAS in the US. About 0% chance it was the latter. Also what was either an HK G36 or another airsoft. More likely than a FAMAS but how many out of shape black women in Atlanta live in the same household as a G36 or a clone like a T36?

Lots of them carrying long guns in a way that suggested it was the first time they've ever carried one or at least they've never moved one from carrying to firing.

In any case, this doesn't seem to be an organic coming together of armed blacks.