White privilege is a neo-Marxist concept that comes from Critical Race Theory. CRT comes from the Frankfurt School of Marxism which basically takes Marxist class conflict theory and applies it to race. Thus, whites represent the evil, oppressor class of haves, and everyone else is the innocent class of have-nots. Yet again it's a denial of reality in which global IQ inequalities are not taken into account when considering the lack of upward mobility of some groups compared to others. Privilege theory is so extreme that it considers national sovereignty of a founding "have" group to be evil by default, because they don't open their borders and hand over the keys to the castle.
The whole concept is 100% Communism and it relies mostly on armies of useful idiots to enact.