Yes, eugenics was not only racist but also about the perfectibility of mankind, the Übermensch of Friedrich Nietzsche, and so popular with the Nazis. Martin Luther King, invoked My Country, Tis of Thee in his I Have a Dream speech because it was a song everyone knew and he wanted to bring out the fuller meaning of it for them in the context of the struggle for civil rights. And as you say Rich, “King’s message was that freedom was about personal integrity and self-respect, not about blind adherence to any abstract system for goodness”. As we are all made in the image of God, true goodness has not to do with the colour of our skin.