Dreamer128,
That's a tough question to answer.
What if you changed history and it somehow made the present a lot worse than it is? Not that saving those people would be wrong, but what if in doing so that it brought more suffering to future generations?
I am sure if we could and it had no negative consequences, that a majority of us would choose to go back and prevent all the mindless mass murders that have occured throughout history.

Moni
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