According to the National Academy of Sciences, in 2008 the United States had a death-by-violence rate of 6.47 per 100,000 people. That is enough to make the United States rank first out of seventeen “high-income democracies” ranked in that category. The second-ranked country was Finland, with a death-by-violence rate of 2.24 per 100,000.

http://sites.nationalacademies.org/DBASSE/CPOP/DBASSE_080393#violence
Courtesy of Ranking America.
For more from Dr. Mark Rice, check out an interview with him on a previous episode of Biology of the Blog.