The stunt featured hundreds of people in 26 cities dressed as zombies invading Landmarks. The clip is to show the effects of the spreading zombification of the world.
The walking Dead airs October 31st Holloween night on AMC. The Walking Dead stars Andrew Lincoln (Love Actually), Jon Bernthal ("The Pacific"), Sarah Wayne Callies ("Prison Break"), Laurie Holden (The Mist), Jeffrey DeMunn (The Green Mile), Steven Yeun ("The Big Bang Theory") and Emma Bell (The Bedford Diaries)