Blacks and whites are both humans, that is a false equivalency when interspecies. Humans are not equal and I fully reject any notion that implies that I am equal to a man that rapes children. To state all humans have equal rights within their societal contract is a far stronger statement and one that I can support;
You contradict yourself. First you state that lions kill other lions due to territorial and alpha assertion - both necessary for the survival of lions as their social structure and nature dictates it to be so. Then you make a statement on needless killing? So what is it, needless or necessary? Very few animals have been observed to kill for pleasure, humans, dolphins, and chimps. Survival of the fittest isn't you killing me for no reason as that would be recreational, that is a fundamental misunderstanding. Killing me to increase chances of survival is.
As humans are social creatures, what civilisation, culture, or society has ever condoned needless killing of humans by other humans? The answer is none, there has always been some sort of push for survival, resources, or strength. For instance murder is to a degree an accepted norm in American gang culture as it is an assertion of strength and will to survive but that is a subjective moral limited to that subculture; as it condmened and against law the in larger American culture.
You start off this argument admitting to moral subjectivity but quickly fall into moral objectiivty as the basis for your arguements.