Well, you know that will be extremely difficult to believe. No one is going to admit that they removed a bunch of black kids because they were black, and probably assumed to start a disturbance in the stands.
Ok, Trump's campaign was on a plane (at least part of it). It's not 1980. People can get information, real time, wherever they are. It is unlikely that Trump, himself, made the call, but it is not impossible that he did know and had the opportunity to make the call.
As for the students shouting profanities.... is that all 30? 15? 5? Do you expel an entire group simply because of an unruly person you happen to be sitting next to? And how does one remove a group of 30 people "shouting profanities" in such a way "that few people in the large crowd noticed anything at all," as stated by the Sheriff? Does that make sense? A group of disruptive students are removed in such a way that hardly anyone noticed? Don't disruptive people get LOUDER when they are removed? Someone is trying, poorly, to sell us a bill of goods.
As for it being a "private" event, I'd like to challenge that. First you're assuming these kids weren't Trump supporters. Some may not have been, some may, and some undecided. They obtained tickets just like anyone else. The problem I have, is that the venue used was a VSU facility, and the people expelled VSU students. I'm not completely sure it's legal to expel all these students of this public university without just cause.
Personally, I think there's a lot of spin going on by Trump's campaign. Were these students warned about their language? Was their language directed towards someone? And where are the corroborating stories by other attendees (well, at least the ones that did notice)?
My personal opinion, is that a group of black kids who were dressed similarly were noticed, and asked to leave because it was assumed they'd create a disturbance once the rally began. That's the simplest, most reasonable conclusion. But, of course, nobody can actually admit that.
It was a private event. The venue was rented out to the Trump campaign. That happens at venues at public and private universities, daily. Schools rent out their facilities, and while under rental contract, the venue is private.
Just because they bought (probably acquired - was it a paid event? Aren't these rallies normally free?) tickets doesn't mean that they aren't there at the pleasure of the entity renting out the venue. And by their own admission, they were there, en masse, dressed uniformly in all black, as a silent protest. So, if some of them were shouting profanities, it is entirely understandable and reasonable to remove all of them.
There is no controversy here.