Hitler was responsible for killing approximately 11 million people as part of his Final Solution (of which the Holocaust was a part). He is railed against as one of the most evil men in the history of the world, and rightly so. Anyone with any moral sense would agree that the world would have been a much better place had Hitler never been born. What if you had the ability to make that sentiment a reality?
Imagine for a moment that you discovered a way to travel through time, making it possible for you to ensure either that Hitler never be born, or that if born, he would not live long enough to rise to political power. Under what circumstances do you think it would be morally justified to kill to prevent the Final Solution (and for those who can’t get past the emotional problem of what it would be like to personally pull the trigger, assume that you could send someone else to perform the deed)?: