Slavery and race are not related topics. They are separate. We let the left conflate "slavery = white" when they actually don't have anything to do with each other. Every race has been a slaver and a slave. The color of who was doing the slaving has nothing to do with whether slavery is wrong. Like if most slave owners in the U.S. had been black, slavery would still have been bad. I know, leftists can't believe it, but it's true.
"Hate crime" is a stupid concept. It sounds so similar to "thought crime" that is should give people concern. But oh well. I literally do not care at all whether someone trying to kill me is doing so because of hate or because of some other reason, I will have to defend myself the same either way.
If the trend shown is very close to what the national trend is (which I suspect it likely is), then that is the trend you would expect to see. For instance, if you were charting rates of deaths from illnesses by county, you would expect all of the counties to have increased rates for elderly people, because it is a fact that old people die from illness more often. You would not expect to find one or two random counties where the elderly people in that county have significantly lower rates of death, because that would be against the average. If you did find an anomaly like that, either you have found an oasis where old people live forever, or you found data that is probably inaccurate. So if the voting pattern that you graphed is consistent across the country, the interesting (and possibly false) data would be the anomalies that stick out as unusual. For instance, if you were to chart Georgia or Michigan, my guess is you would find a couple of counties (I bet you can guess which ones) that have a different trend line, which would indicate cheating (the counties that had over 100% voter turnout, for example).
Everything looks natural except that ridiculous spike at the 18-20 level, that is not realistic in any way, they are the demographic least likely to vote. It could potentially be explained by that age range only being registered voters if they actually do vote, so the 18-20 year-olds who are eligible but not registered would be high and those would not show up on this chart. If that is the case, then it looks pretty solid.
If they joke about people's sacred right to free and fair elections being taken away, they deserve to be cancelled.