People making bad decisions based upon anything anyone says, and then blaming the speaker is the issue, are basically the weak in society...
Responsibility starts with one self, that includes one's actions regardless if you got inspired by someone or not.
Hitler (here he is again!) could have blamed America for his actions as he was treating The Passing of the Great Race as a bible for which he thanked the US. But he and his followers were the ones deciding to take action. That action was wrong.