Have to love that there are serious conversations about zombies.
Personally I love the idea of a zombie apocalypse. I ask santa for one every year but the fat bastard hasn't delivered.
I don't personally believe the walking dead will rise but I could see some sort of terrorist attack turning people crazy and they go on a rampage. Probably some sort of weaponized bath salts.
I also say look at the source. I think it's a deflection so people start calling gun owners and pro2a people crazy in saying they are only buying guns in case of zombies.
It's more likely that one day a politician decides they don't want to be voted out and goes all Caesar on us and our president turns into an emporer with his royal guard being the US military. The top of the .gov has the biggest check book in the country if not the world, how hard would it be for them to put every .mil contractor on the pay roll and say your job is to keep me safe and do my bidding. The majority of our military personnel is over seas and the civilians would be the ones to fight, and fight we would, but that's pretty much where my reasoning comes down to when talking about a tyrannical government.
/mindless rant.