in fact, the reality is that there is a longstanding attempt to smear anybody that tries to draw the connection between wage labour and chattel slavery as a "white supremacist". it does not matter if these are the same people that have gone out of their way to abolish slavery. the ability to see through the propaganda must be attacked. this is a classic capitalist smear.
anarchists and socialists have been dealing with this kind of bullshit forever. and, here's the thing: if you fall for this, you're pretty far gone, to begin with. we can have these discussions if you insist. but, let's not miss the point, as they want us to, which is that slavery is about economics and not about race.
if you can't see through this tactic immediately, you're useless to the revolutionary left.
the capitalists don't care what colour you are. they're just always looking for any excuse they can to take away your bargaining power. race. religion. doesn't matter. they'll take whatever is available.