Your posts show that you are a participant in modern racism. That is a poor choice. You are not asked to take responsibility for the past. Racism exists now, and from what you're posting, you appear to be part of the problem.. It's time whites on the right stopped repeating that dumb line.. Whites take credit for the past, MAGA is about a return to some magical past greatness, then whites want to tell us how blacks sold other blacks before we were born. It is time for the white excuse making to end.
I'm not exactly a fan of the MAGA concept, because I personally believe that no nation can be "great." To me, only God is great. So the slogan is problematic in certain ways. Perhaps, we can at least agree on that, even if it is for different reasons.
Racism exists, but it always will, and it happens in all directions. There is a lot of research that shows blacks, on average, have higher ingroup bias than whites. Whites are, on average, the lowest in ingroup bias. This isn't a genetic thing; it's just a result of how a majority operates vs. minorities in Western culture. However, if racism overall is your concern, then the bias among blacks toward non-blacks should be a greater concern than the bias coming from whites. Given your posts, you seem to only care about any perceived slights from whites toward blacks, however.
As for the origin of slavery, it is true that the African Slave Trade did exist long before European involvement. Arabs participated far longer than Europeans, and they still do today in Libya. This observation isn't about assigning guilt to blacks here. This is about providing context to how things came to be. You can certainly criticize our involvement in slavery and ending it later than most of Europe, but it's also been almost 160 years since abolition. Jim Crow is typically brought up as well, but that ended 60 years ago. At some point, the black community has to look inward to resolve its problems. Blaming ****** won't accomplish much, particularly since whites won't be the majority much longer. Latinos don't exactly care as much about virtue signaling on this issue.