I think I've already seen it at Kim du Toit's site actually, not in the department of righteous shootings, but in applause mode certainly:
A group of U.S. tourists, including a former Marine, killed a Costa Rican mugger by breaking his neck after he pulled a gun on them in a Caribbean port, a local police official said on Thursday.
The cruise ship passengers told police they jumped on Wagner Segura, 20, to defend themselves when he pointed a .38 caliber revolver at them near the Caribbean port of Limon on Wednesday, and somehow snapped his neck, regional police director Luis Hernandez said.
Segura died instantly and two other unidentified thieves, one of whom was armed with a knife, fled the scene, Hernandez said.
"One of the tourists was a former Marine and he was probably the one who broke (Segura's) neck," Hernandez said. "His neck was completely snapped."
No charges were filed, it seems that the law there is more open to people defending themselves when attacked. I also rather liked the detail that they put the body on the tour bus and then went looking for a policeman to report the incident to.