Jon Snow was killed by his traitorous brothers (I weep as I write this). He saw the White Walkers and what they could do, and rallied the Wildings to his cause. His nearsighted brothers then stabbed him in the gut. I'm assuming Ghost was on a hunt because this would not have happened if he was there.
This is totally unfair because when the White Walkers do come to the wall, they are all going to regret their decision.
So, in order to prevent the death of everyone in the seven kingdoms (maybe except Cersei Lannister, she can die), I ask you all to join me in requesting that President Obama sign an executive order to bring back our Lord Commander.
If not, the seven kingdoms shall perish from the earth.
P.S. Mr. President, I'm 100% certain Michelle is not happy about this either.