That's an utterly meaningless comparison. Bill Clinton was a governor with terrible policies concerning minorities [1], while Donald Trump was a real estate mogul with terrible policies concerning minorities. The fact that their different leadership positions meant that Trump could harm a statistically fewer number of people means exactly nothing.

"Didn't lock up any black people" isn't exactly an achievement for someone who hasn't served in government.

[1]: I agree with you that Bill Clinton deserves to be held completely accountable for his actions as Arkansas governor.

If you are talking about the cosmic tally of bad deeds, opportunity isn't relevant.

[1] Calling it "half-assed" doesn't even do it justice because the measures are far less than half of what's needed.