The quandary: Preventing deadly campus shootings while respecting rights A week ago, Steven Kazmierczak walked into Tony's Guns & Ammo, a yellow shop in a back yard near the University of Illinois, and bought a Remington shotgun and a 9 mm Glock pistol. Around the same time, family members noticed that Kazmierczak was acting "erratically," after he had stopped taking prescription medicines for anxiety. Kazmierczak used his two new guns, and two more he had also purchased legally, to kill five students and himself Thursday in a shooting rampage at Northern Illinois University that leaves policymakers again scrambling to figure...