I'd have trouble attaining the political power that Hitler did because I woudln't want to use hate and discriminiation as a unifying force, so I'd be stopped a whole hell of a lot farther back than the obvious "not trying to commit genocide" thing. I could probably still use the "unite to rise out of oppression and poverty" angle, but I don't have much political drive.
I woudln't "kill certain people off." I'd certainly want to reform certain retarded-ass laws in the criminal justice system, though.