There is no “restriction on who can think himself or herself superior.”
The Japanese think they are white, and europeans are pink, ugly and smell bad. The Chinese think they are more evolved than the rest of humanity, citing that they are less hairy, are the colour all other races aspire to be, have the epicanthic fold, an evolutionary advantage which tends to protect the inner corner of the eye, and consistently out-perform europeans academically, arguing that they either have higher IQ’s or just work harder.
White Europeans have no monopoly on thinking themselves better than anyone else: what we do have a monopoly on is self-flagellation about our supposed white guilt for our past racism, imperialism, sexism, and whatever other faults we imagine ourselves guilty of. Self-loathing is a lot less attractive than self-promotion in my book.
In Australia we have an acronym for people with a superiority complex: FIGJAM. It stands for “F#$k I’m good, just ask me! As put-downs go, it’s not bad, leveling the proud with good humour. The kind of politically correct self-loathing white male who apologises to everyone for his ethnicity and gender deserves nothing but contempt: “He’s as useless as an ashtray on a motorbike!”