What would you do if zombies grabbed at you from underneath a subway grate?

Apprently NYC's MTA is PISSED about a "Zombie Prank" pulled by some actors  dressed like dead courpses this weekend. The whole thing was organzied by AMC as a promo stunt for The Walking Dead which had its mid-season premiere on Sunday.

In the video the zombie actors get under a subway grate and grab at the feet of passersby. People FREAK-OUT! It's HILARIOUS... but apparently nobody asked the MTA for permission to use the subway gates! WHOOPS!