People only talk about color, but that is misleading. The color difference between the races is the most superficial aspect of the variations. It amounts to less than 1% of the actual genetic difference. It is a syllogism that the differences are like any other species on the planet. To think that there are no differences in disposition, attitude, emotional intelligence etc is irrational. Obviously a pitbull’s disposition cannot generally be compared to a collie, but they are both dogs and related genetically 99% plus. Pure fantasy to think that all people are exactly the except for melanin.