I used to get involved in a lot of fights, I was one of the "directors" of the biggest "ultra" group in my City, I'm with them since I was 14 years old, now I'm 25 and in the last 3-5 years I'm kind of away from that, because it turned much more violent and a lot of weapons are getting into it, knives, guns, baseball bats, rocks etc...
In the beggining of the year my friend kicked the shit out of 2 rivals, and got shot 15minutes later in front of my building leaving my apartment, he almost died.
Thats the kind of stuff that makes you think twice about it.
Bare hands I'm ok, and sometimes it adds a lot of adrenaline and emotion to the match lol, but I'm far from shooting or stabing someone.
This russian fight is cool, cause the leaders, try to "protect" their rivals when they are hurt in the ground, here in Brazil if you stay like this you'd be kicked and stomped until you're dead or passed away.
Now I'm more into organizing the flags, fireworks, flares and parties.
And sometimes when its impossible to stay out, I remember the old times.