The shooter who killed five students at Northern Illinois University on Thursday was a lauded sociology student who earned the Dean's Award in 2006, the Chicago Sun-Times reported. Police identified the gunman as Stephen Kazmierczak, 27. He transferred last year to the University of Illinois in Champaign-Urbana. "He had stopped taking medication and become somewhat erratic in the last couple of weeks," NIU Campus Police Chief Donald Grady said. Kazmierczak had a shotgun and three handguns during the attack, police said Friday. ... The gunman, a former vice president of NIU's Academic Criminal Justice Association, wrote about social justice on...