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  Occupy movement begins on Wall Street in New York City,
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  Larger number of protesters gather after execution of Troy Davis.
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  More than 700 protesters are arrested after marching on the Brooklyn Bridge.
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  International day of protest. More than 900 cities participate according to Occupy organizers.
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  A chaotic police raid on an Occupy encampment causes a stir on online social networks and YouTube.
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  The Occupy movement was again thrust into media attention after a video purportedly showed students in a peaceful protest being pepper sprayed by heavily armored police at the University of California-Davis.
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  Martin Luther King, Jr. 'Occupy the Dream' Rally