New Yorkers will ignore a lot of oddities walking down the streets of the city. You have to, because you encounter the weirdest things. Like a guy licking his shoe clean on the subway. Or people who like to poop in public. It happens.
But, apparently, some things do freak out some New Yorkers. And the walking undead, what with their hanging flesh and vibrant eye colour that I haven't really seen explained in any literature yet, is definitely one of those things.