Heres the incident I'm taking about.
http://beat.bodoglife.com/sports/fighter-tim-thurston-shot-in-leg-at-mma-event-67100.html
That's a big problem with these events, you can regulate the sport but not the people that attend. It's even worse then the monster truck show which had a reputation of brawls in the crowd almost every year until they were forced to stop selling liquor. Not sure if beer sales are allowed again. These events just attract a large segment of the wrong crowd.