One of Bill Gate’s many recommended books was Steve Pinker The Better Angels of Our Nature: Why Violence Has Declined. He shows how dramatically violence decline in civilization over the decades despite the perception that the opposite is true. He devotes a chapter to the wild west.
In the American Wild West, annual homicide rates were fifty to several hundred times higher than those of eastern cities and midwestern farming regions: 50 per 100,000 in Abilene, Kansas, 100 in Dodge City, 229 in Fort Griffin, Texas, and 1,500 in Ellsworth, Kansas.96 The causes were right out of Hobbes. The criminal justice system was underfunded, inept, and often corrupt. “In 1877,” notes Courtwright, “some five thousand men were on the wanted list in Texas alone, not a very encouraging sign of efficiency in law enforcement.”97 Self-help justice was the only way to deter horse thieves, cattle rustlers, highwaymen, and other brigands. The guarantor of its deterrent threat was a reputation for resolve that had to be defended at all costs, epitomized by the epitaph on a Colorado grave marker: “He Called Bill Smith a Liar.”98
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Courtwright cites an average annual homicide rate at the time of 83 per 100,000 and points to “an abundance of other evidence that Gold Rush California was a brutal and unforgiving place. Camp Names were mimetic: Gouge Eye, Murderers Bar, Cut-Throat Gulch, Graveyard Flat. There was a Hangtown, a Helltown, a Whiskeytown, and a Gomorrah, though, interestingly, no Sodom.”101 Mining boom towns elsewhere in the West also had annual homicide rates in the upper gallery: 87 per 100,000 in Aurora, Nevada; 105 in Leadville, Colorado; 116 in Bodie, California; and a whopping 24,000 (almost one in four) in Benton, Wyoming.
Pinker, Steven. The Better Angels of Our Nature: Why Violence Has Declined (p. 103). Penguin Publishing Group. Kindle Edition.
By comparison the current homicide rate in the US is 5 per 100,000, and compared to 10 or so for most of the well policed large cities back in the late 1800s.
I’d like to recommend Mr. Pinkers book but it was really tough read. I classify it in the dull but important category.