ボストン爆破だけテロと呼ぶ違和感:Why is Boston 'terrorism' but not Aurora, Sandy Hook, Tucson and Columbine? @guardian Over the last two years, the US has witnessed at least three other episodes of mass, indiscriminate violence that killed more people than the Boston bombings did: the Tucson shooting by Jared Loughner in which 19 people (including Rep. Gabrielle Giffords) were shot, six of whom died; the Aurora m