The blood was barely dry on the sidewalks in and around Washington DC when 18-year-old Daniel Fears shot two people dead and wounded eight others in Oklahoma because a neighbour criticised his driving. Hapless pundits were still unravelling the murderous motives of the sniper killings when Robert Flores, 41, gunned down three professors at an Arizona nursing school then turned the weapon on himself because he'd failed his course. And Thriller Killer suspects John... (GunPolicy.org)