““Finally, we must bear in mind that guns are not the only tools of mass killing. In America, by far the worst mass murder at a school was carried out with dynamite in 1927.68 That attack left forty-five dead and fifty-eight injured. The 1985 Oklahoma City Bombing and the 2013 Boston Marathon bombings were other rare exceptions in the United States, but bombs are much more commonly used in countries such as Russia.””