"no sensible person regards as criminal"

If no sensible person regards them as criminal, they would not be crimes.

Your assertion is that the sentencing/laws are racist. I would assert that crime, itself, is racist. For whatever reason some minorities commit more crimes. Keep in mind, I'm not saying that they do it BECAUSE they are a minority. I am not saying black people are inherently more criminal because they are black, merely that based on demographics a black person is more likely to be a criminal. I do not know why that is (nor do you) and do not make any attempt at explaining it.