The decline in violence holds for families, neighborhoods, tribes, and states. In essence, humans living today are less likely to meet a violent death, or to suffer from violence or cruelty at the hands of others, than their predecessors in any previous century.
在家庭，邻里，部族和国家中的暴力行为都有所减少。基本上当今的人们比他们过往的祖先更少机会被暴力杀害，或者遭受他人施加的暴力或残酷行为。