TIME POLICE

[Philly Mike]

And it would depend on the timing of the killing. If he were killed pre-WWII then this would have been a totally different planet. Especially considering much of our modern technology was born during WWII fighting him. If Hitler was killed during during his failed assassination attempt, I suspect very little would have been different since the mechanisms that shaped our world were already in place at that time.

however there may have been an advancement in technology for other reasons, but it's all hypothetical.