It sounds like you must be a white person. Am I correct ;P  lol  haha!   So your impoverished understanding of the reality of the problem of white superiority (she did not use the words supremacy as you sate) are obfuscated by the lacunae of your privileged reality.  Try growing up as an immigrant, a minority group, or a First Nations member and then perhaps we can have an intelligent conversation on the topic.  Until then enjoy basking in your ocean of ignorance.