I know this is a hypothetical but Hitler wasn't some one man force. The nazi party was a very large organisation and without Hitler it could still have come into power in the climate that Hitler catapulted himself to fame on. Killing one man rarely makes such a big difference. The holocaust for example wasn't even Hitler idea, although he was looking for something like it. My point is don't assume the future and take things into your own hands because you're trying to tip the scales before a suspected disaster, I don't wanna find out who the savvy maverick that can exploit outrage over trumps death to move even more people to support them and without trumps bafooneries and obvious croniesm actually make a much more horrifying impact.