EOM,
Nice topic. Cofty and others have already debunked the 'findings" to which you refer. I'm glad you took the Ethics class. I developed and taught, for several years, an Ethics class at one of our local colleges. I have more statistical empirical data you could possibly want to view that supports what Cofty has said in the two posts above. In order to teach the class, I had to have the bonafides. Everywhere in the western world and likely developing world individuals are resolving conflict in a much more civil manner than they were decades or centuries ago. I would suggest visiting some of the museums around the country/world which present the actual manner in which people resvolved conflicts. It will stun you.
It may be difficult for some to believe at times due to the horrofic anomalies and the 24/7 media coverage, but it is true.