It sounds to me like he was going to have trouble in the work place already. LOL I bet you dollars to donuts the charges against him were not about the shirt. They aren't stupid.
Well the charges against him are obstruction and disrupting the educational process. So it seems to me that no charges of violence or anything he should be arrested for are present. I stand firm that a suspension would be within the bounds of logic. Arresting him however is not. Unless more information is made available, he was in many peoples' eyes wrongfully arrested.
As far as him having problems in the workplace... Well that is a lot of assumption on your part. I was, and still am, very outspoken. I argued with teachers about various things and was generally proven right. When I was wrong I admitted so. I was a good student, and rarely got into trouble despite my opinionated and outspoken nature. Judging from the fact the article points out an unblemished record, I would assume the same goes for him, unless more relevant info becomes available.
Funny that I, and many others like me, have no issue in the workplace.
I would like to point out that, as the article states, he was not in violation of dress code. Therefore he was breaking no rules. And an arrest for this is overkill on a massive scale.
So once again. Disagree if you want. That's your right, apparently unless the powers that be decide that you don't have that right either.
Edit: Also note that this is just the latest in a long line of stupid decisions. Students suspended for a killer pop tart that apparently looks like a gun. Which in my opinion looks nothing like a gun. Or the kids suspended after disarming another student on the bus after he pulled a loaded gun and made threats.
This country has gone completely off the rails insane. And it's getting worse, not better.