The CEO of Google once sent someone an email which said, virtually verbatim [+], that he would appreciate them not talking about the illegal act he had just ordered over email because it would open them up to a lawsuit.
We know this. Guess why.
[+] The quote, in case anyone thinks I'm being too harsh in my summary: "I would prefer that Omid do it verbally since I don't want to create a paper trail over which we can be sued later? Not sure about this.. thanks Eric" (The antecedent was to "it" was "share with eBay and Paypal executives Google's internal anti-poaching rules as they pertained to eBay/Paypal for the purpose of eliciting their continued cooperation in the conspiracy.")
Regardless, I would say that there's a big difference between murdering someone who is blackmailing you and other kinds of murder, to the point that I wouldn't expect psychopathy from someone who was doing the former.