Let's also say that quite a few top world politicians are responsible for far more deaths than a single one (and were hopefully not drunk nor drugged up when they took their decisions)

Un roi sans divertissement est un homme plein de misères

Now, lessons about society -his fault had nothing to do with "society". He was not a fraud. He was violent. This has nothing to do with politics or the economy. Would you say that an Enron trader should be banned from writing a book about making a marriage work despite a heavy workload? I wouldn't feel that his actions invalidate his political opinions.
And, hopefully, not merely because I mostly agree with him.

Earth provides enough to satisfy every man's need, but not every man's greed. Gandhi