Here is a link to the crime stats (United States cities by crime rate
). The one above from BB, is based on cities with 75,000+ people. DC consistently ranks in the top 5 for as long as I can remember. There is a link in the wiki page to the FBI uniform crime report and all the stats. You can also find most of the "raw" data there, for your own analysis.
If you really want to have some fun, combine the violent crime data, with data from the census bureau.