Zombies invaded Buenos Aires the day before Halloween.

The mob assembled in Plaza San Martin and gathered momentum and numbers until they spilled out of the plaza and took over Calle Florida on their way to the Obelisco.

The flash mob was a huge success with thousands of zombies ambling around. The costumes ranged from a bit of white foundation, to full-on gaping latex wounds, and even one guy even carrying a cow’s brain in his hand all afternoon.

The day was full of wicked amusement including a choreographed Thriller dance, and there was a canned-food drive and a blood-drive.

Happy Halloween!

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Zombie Walk by Beatrice Murch

The trail of blood leads to the plaza and the zombies.

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Zombie Walk by Beatrice Murch

Joker and Harley Quinn make an appearance.

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Zombie Walk by Beatrice Murch

Cow brains, for when human brains just won't do.

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Zombie Walk by Beatrice Murch

The little blue princess isn't scared or impressed at all by his costume.

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Zombie Walk by Beatrice Murch

Zombie staff rule over the crowd.

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Zombie Walk by Beatrice Murch

Out of place tourists wonder what the hell is going on.

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Zombie Walk by Beatrice Murch

Teaching Thriller moves to the crowd of zombies.

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Zombie Walk by Beatrice Murch

Evil knows what evil wants.

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Zombie Walk by Beatrice Murch

Zom-Bin-Laden loves his gun.

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Zombie Walk by Beatrice Murch

Zombies pouring out onto Calle Florida.

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Zombie Walk by Beatrice Murch

Melodic Punk Rock rocking their way down Calle Lavalle.

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Zombie Walk by Beatrice Murch

Reynaldo takes the lead.

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Zombie Walk by Beatrice Murch

Even the press got bitten.

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Zombie Walk by Beatrice Murch

"Gimme a kiss lover." Ahh, young zombie love.

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Zombie Walk by Beatrice Murch

Zombie love their moshpits.

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Zombie Walk by Beatrice Murch

Zombies are on the prowl.