Good news. Crime is down in Chicago. Walk the streets late at night. Carry your wallet in your back pocket. It’s safe. Homicides dropped 18 percent in Chicago last year and crime overall was down 16 percent, according to statistics released by the police department this morning.Shootings across the city dropped by 24 percent from 2012 and 16 percent from 2011, according to the department’s numbers. Sexual assaults were down 6 percent from last year, robberies down 12 percent, serious battery down 16 percent, burglaries down 22 percent, motor vehicle thefts down 23 percent, thefts down 3 percent. How was...