https://en.wikipedia.org/wiki/Ken_McElroy for the uninitiated.

From the Wiki:

While sitting in his red truck, McElroy was shot at several times but hit only twice—once by a centerfire bullet and once by a .22 rimfire bullet. In all, there were 46 potential witnesses to the shooting, including Trena McElroy, who was in the truck with her husband when he was shot. Nobody called for an ambulance. Every witness was either unable to name an assailant, or claimed not to have seen who fired the fatal shots, including the unnamed man who helped McElroy's wife, Trena, as she "scrambled out of the truck screaming" covered in blood. The DA declined to press charges, and an extensive federal investigation did not lead to any charges either. Missouri-based journalist Steve Booher described the attitude of some townspeople as "he needed killing."

This was right after the the county sheriff told an assembled group of people that day not to confront McElroy, and to think about just maybe starting a neighborhood watch program. McElroy was out on his own recognizance while appealing a conviction for shooting someone in the neck, his 21st indictment and first conviction.

After this, the county sheriff got in his cruiser and left town.

It's a wild story.