An alert FrontBurnervian points us to a compelling story in the Guardian about the U.S. county with the most police killings per capita. It is Kern County, in California. You should read the story (the Guardian’s online presentation is pretty slick). But about midway through the story, I saw this chart and was a little startled to learn that Dallas and Tarrant counties are in a five-way tie for fifth place. I mean, Chicago has had a rash of gun violence, yet Cook County, Illinois, with more than twice Dallas County’s population, has fewer police killings. What’s going on here?