I just pulled into an event on a Friday night, when I see cop cars. I can hear an ambulance in the distance. I get out of my truck, and can hear a certain amount of yelling and screaming. Shortly thereafter, an ambulance pulled up, and I got the story from someone who had been there:

See, now, I don't know what your LARP is like, but East Texas LARP is not exactly "bunch of geeks". Think rougher than that. More like hicks and hillbillies. People you wouldn't really eyeball at a bar.

Anyways, the park we rented also happened to have a couple trailer houses on it (... yeah). In the past, this had never proved to be an issue. The "locals" kept to themselves, and we did our LARP-y thing. Several of our players had gotten up to whatever happens at a LARP event, namely hitting each other with padded weapons.

My memory is a bit fuzzy here. I'm sure you can look it up in the official court documents, but I'll proceed as it was told to me.

A fine gentleman exited on of the trailer homes, and began moving about our event. He was definitely a methhead, and almost certainly high at the time. He asked one player what we were doing, and that player (drunk), tried to explain. El Methhead moved over to where the other players were fooling around, and tries to participate. He gets his feathers ruffled, and runs off.

At this point, he is very, very agitated. He runs up to another player who is getting out of his car, and attempts to stab him with a knife several times. No injuries. He then runs off, and finds himself at the pavilions of one of our weapon- and leather-smiths. This player is holding an honest-to-god oak-and-steel mace. He attempts to hand a beer to the methhead, and gets cut across the belly for his kindness.

A friend of my sees this transpire, and runs over to assist. He spins the methhead around and "gets hit harder than he's ever been". Of course, what has actually happened is the methhead cut him from the edge of his eye through his ear (bisecting his ear, and narrowly missing the destruction of his eyeball).

A few other players finally see what is occurring, and this is where the "East Texas LARPers aren't geeks" thing comes into play. I can't go into too many details, because I don't know the official records, but suffice it to say that within a few seconds, our gentleman methhead has broken fingers, a dislocated knee and elbow, and is uncontrollably pissing blood (I believe the ruptured kidney is part of the official record).

Someone goes over to his home to let anyone home know what has occurred; the occupant (a mother and a child) flee the scene. Apparently held against their will (I cannot verify this statement).

The cops show up and take their time questioning everyone while this guy is trussed up in a pool of his own blood/urine. He gets to take a cop car to the hospital. Ambulance(s) take the wounded LARPers.

No one was killed, and the worst wounds (the head slash and gut cut) were not superficial, but not serious trauma. My friend who was cut across the face has a wicked-cool pirate scar, and still wears his blood-stained tabard from time to time.

I have other stories; LARPers stabbing each other to death over drug deals, some asshole nearly killing a LARPer with a real set of nunchucks, an apocryphal shooting story, etc.