Most often - and this is a perfect example - the notion of 'karma' is used when someone who has done something terrible, then has something terrible happen to them, and the natural human instinct to derive some level of satisfaction from this, is then labelled as 'karma'.
I am minded to echo rowanwitch's view - I dont want to wish him ill, because that diminishes me as an individual, and has no effect on him whatsoever, so I will do likewise and wish him nothing at all.
I do hope that, if he survives, he understands and appreciates that he does so by virtue of a society that is far more nurturing and caring for its people than the society he wishes the world to become - but that is highly unlikely.