I had no idea this was a thing despite also having it directly on my walls.
When I read your statement, I was like wait... I think that is what my wall says and had to go check.
The lady that lived here before me put that and some other weird word art on the walls. Been meaning to get around to peeling it off and repainting, but keep finding other priorities.
This looks like a red (republican) accusing a blue (democrat) of wanting to abolish those amendments.
As ridiculous as most people would find it, there are a lot of Republicans that view Democrats as the party of slavery and racism, both in the past and currently. The current focus on race-based equity instead of equality just emphasizes it in their minds.