An Optimistic Outlook: Limited Number of Evil-doers?

So, Igor Strelkov of the Malaysian plane downing in Ukraine may have been involved in a mass killing in Bosnia in 1992.   One possible interpretation is that the number of evil assholes in the world are finite, so that when you need something bad done, you reach out to one of the few guys who is willing to do this kind of stuff (kind of like asking Rumsfeld to be Secretary of Defense again?).

After a thoroughly depressing week or two, I have to grasp at such straws.