Proceeding on the assumption related idea that the "holodeck," a "transporter," for "beaming him aboard," and a "time machine," or simulations
of the the ideas could vacuum up anti-social figures who create wars, then instead of extreme prejudice, you could mercifully extract Hitler et al,
and observe the results. Perhaps you could replace him with a benevolant clone in place for observational effect. You could leave him in a
"holodeck," simulation, and let him preview what history had in store for him.
This would leave the person intact, in case you had to deposit him into another time. Imagine he would be surrounded by bitmap images, alone but
thinking "nothing out of the ordinary," had happened.
Killing people is totally for losers, people are more than anyone could possibly know, much more than a massive database.
Probably you could start back in the 1500s to 1600s to do your simulation. Since you already have the Treaty of Wesphalia, you might play around with
extracting some crucial Venetian bankers and their agents de provocateur? Eg. examine the consequences of benevolant intervention to prevent the
banker "inspired," 100 year war? Maybe you could toy around with rodent extermination or once again "holodeck rodent isolation." No Black Death,
voila!
Maybe you could try holodeck isolation, and make the Romans and the Jewish leaders "disappear into it," preserving the history, but allowing Jesus
to continue with his teachings. That would be a stretch, but after all, what's science fiction for anyway?
The possiblities are endless. Anyone for starting a novel in here on the subject?

[Edited on 2-3-2004 by SkipShipman]