According to Osho, the morality of killing Hitler cannot be decided by the act itself; it depends entirely on the doer’s inner state. If one acts from egoless equanimity, where gain and loss, victory and defeat, pleasure and pain are equal, there is no sin. But if driven by fear, hate, or personal gain, the same act is violence and bondage.
It’s not the deed but your inner state—calm, selfless awareness can act without wrong; fear, anger, or gain makes the same act wrong.