Historian Richard Shenkman: in Dodge City there were just five killings in 1878, the most homicidal year in the town's Frontier history.
Dodge City saw 15 people die violently from 1876–1885—an average of 1.5 per year.
Deadwood, South Dakota and Tombstone, Arizona (home of the O.K. Corral), during their worst years of violence saw four and five murders respectively.
All the big cattle towns of Kansas combined saw a total of 45 murders during the period of 1870-1885.
According to Dykstra and Richard M. Brown, while the Kansas code gave mayors the power to call a vigilante group from all the men in the town who ranged in ages from 18–50, it seems, at least in Kansas, that it was rarely done. In a span of 38 years, Kansas had only 19 vigilante movements that accounted for 18 deaths. In addition, between 1876 and 1886, no one was lynched or hanged illegally in Dodge City.
If anyone is wondering about the anarcho-capitalism and whether it is synonymous with lack of order, violence and chaos, there is hardly a better example of a functioning anarcho-capitalist society than the American West of the frontiere peripod.
miko