I believe morality is based upon the idea of justice which is based upon the existence of two or more principalities (groups and/or individuals) of relatively equal strength and influence. I'll just quote Nietzsche: "...the origin of justice as a mutual adjustment between roughly equal powers (balance being the precondition of all covenants, and hence of all law)."
Hence African-Americans were freed in the late 19th Century and given half the vote. (Bear with me. My knowledge of history is fragmentary and shallow--and often incorrect. Nevertheless, I hope you catch the dark irony of that statement

I favor Nietzsche's views (which are inflammatory and, even, sinister) on morality. His espousing of immorality or Unmorality though radical and, like I said, rather sinister (his apocalyptic attack on Judeo-Christian values, or Slave Morality, certainly sent chills of inspiration up and down Hitler's spine ) Nietzsche's essential intent is to consecrate the individual, free him from the self-effacement and enervation of Herd Morality. And I think freedom and personal choice are a Good thing even if it requires an Evil negation. At least that's what my last fortune cookie told me...