William, thank you for this. As a Black, Gullah woman of a "certain age" -- growing up, I knew of Gabriel Prosser, mainly because his efforts with failed allies mirrored those of Denmark Vesey:

https://www.npr.org/sections/codeswitch/2015/06/18/415465656/denmark-vesey-and-the-history-of-charleston-s-mother-emanuel-church

Brotha, you ain't said nothin' but a damned word when you said, "The suffrage movement is just an example of what happens when your presumed allies really aren’t. Don’t rely totally on allies that may not be there for you. No group or political party is excluded."