One wonders if the authors of this stupidity actually thought through the implications of their statements. If belief in one's entitlement to freedom is white supremacy, then that necessarily implies that the true, "natural" state for non-whites is non-freedom - i.e., slavery.
So, to boil that statement down to its necessary implications, what the authors are saying is that slavery is the natural condition for non-whites.
That is so blatantly racist, you just cannot make that sh&t up.