Are kids who take Karate more or less likely to get into a fight?

I am thinking about letting my 12 year old son take a martial arts class. The idea is that it would instill discipline. The thought occurred to me how this might led to more fights.

On the one who wouldn't want to use your training? As a member of the military I know we welcome the opportunity to finally use our training. So under this idea he is more likely to fight because he is ready to fight and wants to show his stuff. The idea that they teach you to avoid fights I think is more persuasive to mature adults. Young kids have something to prove.

Along those lines, I think he is more likely to be the target of a fight with those wanting to prove themselves. When I was a kid those kids who took karate where always doing side kicks and showing off their stuff. It was a challenge and a warning to those who were taking notes. What better way to show you are a badass than by beating up a kid who knows karate? It is putting a target on his back.