Re: Was Picard wrong in I,Borg?
^ And it's likely that even if you do kill Hitler or Stalin or whoever, someone else will take his place. You could go back in time, kill Hitler, then come back and hear "Why didn't you kill Whiffenberger like we asked you to?" or something like that.
In labor news: Longshoremen walked off the piers today. Rescue operations are continuing.