Flash Mob event
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'Flash Mob' art causes a scene

When it comes to gathering mass crowds via modern technology, all done with the end goal of spreading joy, no one has done more than Charlie Todd.

Todd, a 32-year old New York resident, is the founder of Improv Everywhere, which has produced over 100 crowd-sourced spectacles since 2001.

Go to next video: How to organise a flashmob