My blogging co-host Stacy McCain has a post up called Who is Murdering Whom? which deals with where in America homicides are really occurring. (The Gentle Reader will notice that Stacy gets the cases of his pronouns correct.) The short answer to that question is: generally in cities which have been run by the same party for decades.
The top five killing zones, along with their rates of murders per 100,000, are:
St. Louis 55.5 (about the same as Venezuela)
Detroit 45.0 (about the same as Jamaica)
New Orleans 44.4 (about the same as Jamaica)
Chicago 28.3 (a bit worse than Brazil)
Washington 19.9 (notably worse than Namibia and Mexico)
The U.S. national rate for murders is 5.3 per 100,000—which is below the world average of 6.2.
It’s worth noting that essentially all of the countries with murder rates worse that ours have very strict gun control laws. The countries with lower murder rates are a mixed bag, but two stand out. Switzerland, where there is a militia weapon in almost every household, has a murder rate of 0.69. Israel, which is awash in military weapons, has to include murders committed by Palestinian terrorists to get its rate up to 1.4.