Chicago Alone Accounts For 10 Percent Of Mass Shootings In The US -- Chicago Alone Accounts For 10 Percent Of Mass Shootings In The US Chicago accounted for approximately 10 percent of mass shootings during a 17-month period in the U.S. The New York Times Editorial Board created a graphic depicting the total amount of mass shootings committed between June 12, 2016 (the Pulse Nightclub attack) and Oct. 1, 2017 (the Las Vegas massacre), based on data from the Gun Violence Archive. The Gun Violence Archive, a nonprofit that tracks gun violence in America, defines mass shooting as incidents where “FOUR or more shot and/or killed in a single event, at the same general time and location not including the shooter.” TheDCNF examined the number of mass shootings committed per city in that 17-month period, and found that Chicago made up about 10 percent of those incidents. Of the 521 mass shootings committed, approximately 53 occurred in the city of Chicago. Chicago, on average, represented about 11 percent of total mass shootings in the country each month. The city, racked by gang violence, sees about three mass shootings per month, according to the data. The city accounted for 19 percent of mass shootings in June 2016 alone" Hey Emanuel, why don't you and your Lib buddies stop looking for 'serious disasters to take advantage of politically' AND FIX YOUR DAMN CITY?! Clean up your backyard - stop the gun violence in Chicago before you try to lecture the rest of America about the need to do something about gun violence.