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Bloomberg is not a Democrat. Nor is he running for office. But he gets the threat of physical violence and a fun nickname because someone like Bloomberg offending Trump is especially offensive to Trump.
Any New Yorker can tell you why. It's because Trump has spent decades ignoring one of the cardinal rules of being publicly rich in this town: If you must flaunt your money, then you must also give it away in large sums.
If you don't, then you'll spend your life feeling like an outsider, building resentment against those who should be your set. And that's exactly what Trump has done.
While America has spent decades seeing Trump as a billionaire entrepreneur with a lux lifestyle, New York's elite have spent the same amount of time seeing him very differently as a tacky sideshow with no regard for social norms.
No, this isn't Edith Wharton's New York City, but there are still rules. For one, if you want to attend everyone's fancy charity parties, then you've got to make a donation. If you don't make the donation, then prepare for everyone to stare daggers at you, to worry about your financial situation, to judge you.
If you don't give, then eventually people will invite you to fewer events. They'll consider you especially rude for going to the ones that you have been invited to out of politeness. That is when you are truly rejected by people who, ideally, since you're a "billionaire, too," should be your peers.
And that's when the gauche things you do as a rich person are suddenly inexcusable. People may see you at parties, but they do not really see
you.
They see a clown, a joke, a fraud.