Why are most of the people who support equal rights for black people not black? Would any minority group have rights if the majority lacked capacity for empathy? People have the ability to empathize with others. Would I want half the money I earned stolen from my children when I die? No! Would I want half of my hard earned money taken from my check? No! And most of all, do I think success should be punished? No!
I might like to be rich some day. If I were to achieve that goal, I'd be slapped down. I think all people should be treated equally under the law. Rich, poor, black, white, male, female. Justice is supposed to be blind. Saying what do you care about them? They're only 3% of the population. Let us rob them and you can have some of the loot. I'm sure many Germans were given the same argument about the Jews. Why should you care? You're not a Jew. They have so much wealth. We'll just take it to solve our financial troubles. It happened. Are you really so selfish that you would abuse the minority to fuel your envy.
Any rich person who feels that the government should have more of their money is free to write them a check. Any rich person who is calling for higher taxes, is looking to profit from the confiscation of other people's money. If they were sincere, they would have already given their wealth to the treasury.