Homicides peaked in Chicago at more than 900 a year in the early to mid-1990s. This year has seen homicides soar month after month to levels not seen in about two decades. The 92 homicides in August alone marked the most the city had seen for a single month since July 1993. By early September, Chicago surpassed the homicide toll for all of 2015. The Halloween weekend ended with 59 people shot, 17 fatally, the deadliest weekend of 2016. And in the just-completed November, homicides totaled 77, the worst for that month since 78 in 1994.