Did you learn your stats at the same school where you studied logic, spelling, grammar and punctuation? Chicago's murder rate per 100k residents was already over 19 in August of 2012 (http://www.nbcchicago.com). That's almost twice the level in Los Angeles (2011) for example. The Louisiana stats you specify are skewed just a tad by the plus 60 rate in New Orleans (2006-2007). And the NY City rate is higher than the rate for the less firearm restrictive areas outside NYC.