'There we have it I'm afraid. Shoot-out at the OK Corral.'

Interestingly, the Shoot-out at the OK Corral was, ostensibly, all about 'gun-control'. Tombstone, like many towns in the Old West, did not allow the carrying of firearms (where was the NRA?!!!). The Earp brothers' enemies were carrying, in a locale where it was often tolerated - the OK Corral. The Earps confronted them, with the infamous results.

That's the way I heard it, anyway.