That was fun while it lasted. New York City was free of shootings, stabbings, or murders between 10:30 p.m. Sunday and 11:20 a.m. Tuesday, making Monday entirely murder-free in the city. Police officials say they can’t recall the last time such a day occurred. The city’s murder rate is already low this year, with the 2012 tally expected to be about 400. Last year’s murder total was 515. However, the city was not entirely free from violence on Monday—one teenager accidentally shot himself in the leg.