Why Would You Throw a Rock at an Alligator?

I cursed out a guy for throwing a rock at an alligator. I am now incredibly anxious. I hate hate hate confrontation and I don't handle it very well when it's on the spot like that.

I was standing by the dining hall lake where this guy was playing guitar and a group of girls were looking at the alligator. I wasn't very close, just kinda watching from afar, mostly to see other peoples reactions I guess. People watching.

Some dickhead thought it'd be a good idea to take a rock off the ground and chuck it at the gator. It wasn't a big rock or anything, and I don't think it hurt the gator thankfully, but... Oh my god, I was pissed.

I could understand maybe if it was some kid. But this is a grown ass adult hanging out with his friends. College student, independent, and he's still doing this kind of shit. Are you joking?? How immature do you have to be to throw shit at a live animal? 

I started cursing him out. I wish I could better articulate myself in the moment because half of what came out of my mouth was curse words. This guy didn't show any remorse like either, he looked at me like I was the weird one for calling him out on this bullshit. Saying shit like "thats a dinosaur bro". It doesn't matter what kind of animal it is, don't throw a rock at it?? Expecially not a gator. How stupid do you have to be to willingly piss off an alligator that's that close to you? 

I stormed off within like a minute. I'm not getting into a whole fight with an idiot like that. Besides, I needed to calm down before I had a full breakdown. I've had a rough few days with my depression/ADHD and I'd initially left the house to calm myself down. So much for that, I guess.

Sometimes I forget how immature people can be. Sometimes I remember how people don't take me seriously because of how I look and speak. Sometimes I forget that the good I assume in everyone isn't entirely true.

I went back to my dorm. Checking behind my shoulder to make sure he didn't follow me because I'm paranoid about that sort of stuff. I'm sitting in the common area with my cat. I put on this classical concert I've been wanting to listen through, and I drew some gators. I'm a bit calmer now, but as you can tell through my typing, I'm still pissed. 

Bless Ruby, because the first thing I did when I came home was sit down and pet her. She's sitting by my leg right now. She's amazing at keeping me stable...

Here's the drawing, by the way. I referenced the photos from my other post when making them.