| 1963 March on Washington |
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| 1969 Vietnam War Protest March |
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| 2001 New York Yankees |
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| 2013 Boston Marathon |
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| 2014 People's Climate March |
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| 2017 Women's March |
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| 2018 March for Our Lives |
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| 2020 Black Lives Matter Marches |
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| 3D Modeling |
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| 3D Printing |
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5.8 |
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| 3D Printing |
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| 6888th Battalion and Military Achievement |
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6.4 |
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| Aardvark or Anteater |
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3.7 |
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| Abby Sunderland: Lost at Sea |
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3.3 |
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| A Better Alarm System |
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| A Better App |
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| A Better Backpack |
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| A Better Grocery Cart |
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| A Better Hoodie |
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| A Better Library Checkout |
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