No the logic to me is that most people who live in that environment are fine with diversity. That somebody would seek out that park and graffiti shitty swastikas, is like not a trump supporter. Instead, it is far more likely it is a leftist who wants to further the idiotic notion trump and most of his supporters are anti semitic.
You have absolutely no proof it was a trump supporter. None. Just like the hillary allied splc had no proof bannon was anti semitic, but that didn't stop them from furthering bigoted lies, which they backed down from.
I find it interesting that despite all of these supposed hate crimes, very few I'd any, have been proven to be caused by a Trump supporter, if they even occurred at all. Yet we see time and again the hoaxes and lies.
Democrats are liars. They are birddoggers and they are sore losers.
You'd like to think that urban residents in diverse areas would be fine with diversity, and many are - hence why most major urban areas lean heavily Democrat/Progressive. But there is still plenty of discord. There have been racial tensions and plenty of LGBT tensions in NYC, sexual assaults and murders. One could even speculate that by being a Trump supporter in such a diverse area may make you even more hardcore about it. For some that diversity in their face at all times creates an even stronger resentment.
I don't have any proof that this particular instance was perpetrated by a Trump supporter or someone else. Nobody has been caught. But the statement is pro Trump, and just like when a Trump campaign facility was attacked, even though nobody was caught and there was no proof, it was by default assumed to be Democrats.
Then the rest of your post just goes to show you have zero logic. Out of the hundreds of hate crime related incidents the vast majority is part of some liberal plan to set all these things up and frame Trumpists. That's completely asinine. That's a way more farfetched conclusion than assuming the opposite. It's totally insane really.
The fact is the alt-right and white nationalists were emboldened by the rhetoric of your hero's campaign. It was evident at his rallies and it was evident on the internet - all over the place. It's really not a stretch of the imagination to come to the conclusion that a Trump victory emboldened a lot of those very same people. This is a logical result of what you do when you cater to those types of groups, they come out to play. That makes far more sense than anything coming out of your mind that's for shit sure.