We highly recommend reading the work of Dr William A McConochie, PhD, author and owner of the Political Psychology Research web site.
Bill freely shares what he has discovered about the psychological components of the tendency to gravitate toward violence-proneness and warmongering-endorsement.
Based on his findings, Bill has devised a way to construct a political system that is immune to corruption and abuse. His website (link above) contains numerous articles of interest about his research and vision for the future — truly fair and ethical political representation.