>[citation needed] https://en.wikipedia.org/wiki/The_Better_Angels_of_Our_Nature https://en.wikipedia.org/wiki/The_Better_Angels_of_Our_Natur... Now where's y

>[citation needed] https://en.wikipedia.org/wiki/The_Better_Angels_of_Our_Nature https://en.wikipedia.org/wiki/The_Better_Angels_of_Our_Natur... Now where's your citation to the historical increase in violence?