Bob Greene : The real reason mass murderers kill people is elusive . He asks whether outside influences play a role in inciting violence . Greene : Charlie Starkweather , whose name means nothing to most people today , had more than one movie made about him after his killing spree on the American Plains in the 1950s . These days , killers seeking lasting fame are destined to fail . He says killers who commit crimes prevent us from knowing their motives .
Bob Greene : The real reason mass murderers kill people is elusive . He asks whether outside influences play a role in inciting violence . Greene : These days , killers seeking lasting fame are destined to fail . He says killers who commit crimes prevent us from knowing their motives .