I've been in plenty, about one every 2-3 weeks. Fortunately, i did boxing for more than 10 years, so i win most of them. 
Some of them are started by me, some aren't. I actually like to fight, when i'm bored i'm looking to start fights.
Here, if somebody throws the first punch he will be guilty when the police comes (i can even kill him, the police can't do anything to me, i was just defending myself).
It's so fun! You just go behind a guy, make him hit you (curse at him, call him names, spit in his face) and after that, you can basically beat the **** out of him, break his teeth,etc and when you're done call the police. As long as you have a witness (my GF, most of the times, films the whole thing), you're ok.
Some of them are started by me, some aren't. I actually like to fight, when i'm bored i'm looking to start fights.
Here, if somebody throws the first punch he will be guilty when the police comes (i can even kill him, the police can't do anything to me, i was just defending myself).
It's so fun! You just go behind a guy, make him hit you (curse at him, call him names, spit in his face) and after that, you can basically beat the **** out of him, break his teeth,etc and when you're done call the police. As long as you have a witness (my GF, most of the times, films the whole thing), you're ok.