I think sometimes we can get so emotionaly invested in our particular political "side" that people can't possibly dare to use a little common sense and understanding in a situation for fear of giving a little inch...
Look, if the kid was "pointing his finger like a gun" accompanied by other evidence of threatening, bullying, taunting a particular kid then I can understand the suspension...not becuase of mimicing a "gun" but because bullying/threatening another student is absolutely a legitimate reason for suspension. Anyone suggesting that said movement CAN'T be used as a threatening gesture is being amazingly dishonest. For example, lets look at movies. Anyone remember this in Gran Tornio?
What was it's purpose? It was Eastwoods character attempting to intimidate and threaten the teens. Or more specifically, when he does it to the passing car of those giving his neighbor a hard time (who he later goes to their house, specifically with the point of making them think he had a gun).
On the flip side....
If it's simply because he was "mimicing a gun", that's a bit ridiculous. There's plenty of ways to do the finger gun motion without it being reasonable to take it as threatening or dangerous in any degree. And abscent any significant supporting evidence into the issue, suspending someone simply for making that motion...even if it's towards another kid...is a bit over the top. Going to movies as a reference again, it'd be ridiculous to suggest someone using the finger guns like Shooter McGavin is somehow threatening or indicating any level of danger or discomfort for a student:
The problem is...and this is largely been caused by both sides over the year...schools have entered into such a "zero tolerance" ground that often nuance and context are hardly able or even desired to be used.
If we're arguably SINGULARLY about the finger gun, we're being a bit ridiculous here unless there's some evidence or reason to suggest that the suspension was because of that alone and specifically becuase it "resembles a gun".