"New York murders fell to a record low in 2013. At less than one murder a day, the rate per 100,000 residents fell 20 percent from last year, and at 4.0, it was the only top-ten city to fall below the national average of 4.7. Though 2014 has gotten off to a less than stellar start: two people were killed there on New Year's Day."
"With 150 killings as of Tuesday, the largest city in Tennessee was the second in the top ten to see a rise in murders last year, of about 13 percent. The 10-year count is up 19 percent from 2003 and the rate is over four times the national average. Police Lt. Joe Scott explained the uptick in violence earlier this year, saying, "This year there just seems to be a lot of neighborhood arguing"
Looks like the concealed carry law was not the cause of declining murder rate.8 of 10 cities with highest murder rates saw declines.