I always avoid confrontations over a spot. It's not worth it. You never know what will happen with the nuts out there.
That is a really good policy. The last time I got into a confrontation over a parking spot was about 15 years ago. I was backing into a parallel spot, and this little import car zipped in behind me and tried to steal it. I gave them a few hand gestures, and they moved to another spot across the street while I backed into the space.
Then SEVEN guys got out of this little car, all between the ages of about 18 to 25, and they were looking to kick my butt. And then another car showed up with three more friends, who also wanted to kick my butt without even knowing why. Talk about pack mentality. I was totally surrounded, and freaking out on the inside, but somehow managed to keep my composure, mostly.
The cops were on their way, thanks to an observant neighbor, but I didn't know that, and they were more than a few minutes away anyway. I had to do a real song-and-dance to get out of there with all of my teeth. As it was, they were pelting my truck with rocks as I drove off.
Was I packing? No. Would I have pulled if I was? Probably not, unless they had already started beating on me. I got out of there with a few dings on my truck, and some seriously wounded pride, but no injuries or charges.
I learned some real lessons that night, about not messing with people, and about not making assumptions, and about picking my battles.