It was a "horrible, horrible day." That's how Milwaukee Mayor Tom Barrett reacted to the brutal assault by a Miller brewing employee that killed five people Wednesday. The gunman, a 51-year-old local man yet to be identified, fatally shot himself after the killings on property owned by Miller parent company Molson Coors. Wisconsin has seen 11 mass murders in the last 20 years.
Why did this happen? Authorities have not mentioned a motive for the attack, while Molson Coors announced that its Milwaukee brewery would remain closed to allow "time to cope" with the tragedy.