From Jan. 1 to June 30, the nation endured 28 mass killings, all but one of which involved guns. The death toll rose just about every week, a constant cycle of violence and grief. Six months. 181 days. 28 mass killings. 140 victims. One country.
The shooting began at about 8:30 pm local time, and the entire Michigan State University campus and surrounding neighborhoods were placed under a security lockdown while police searched door-to-door for the gunman.