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List of the Largest Single-Day Protests in the United States
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A large hand-painted banner showing a globe and the words Earth and a speech bubble reading Help rises above a crowd gathered outdoors in Central Park, New York City. Bar chart titled "10 largest single-day protests in U.S. history ranked by lowest estimated attendance," showing First Earth Day (1970) as the largest with 20 million, followed by "No Kings" protests, Hands Across America, Women's March, March for Our Lives, Vietnam War protest, Black Lives Matter, and Million Man March.
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List of the Largest Single-Day Protests in the United States: References & Edit History

Article Contributors

Primary Contributors

  • Mindy Johnston
    Mindy Spitzer Johnston is Managing Editor at Encyclopædia Britannica. 
  • Rick Livingston
    Rick Livingston is the Sr. Director of Media at Encyclopædia Britannica.

Article History

Type Description Contributor Date
List order adjusted. Apr 15, 2026
Added the 1993 March on Washington for Lesbian, Gay, and Bi Equal Rights and Liberation. Apr 13, 2026
Updated with estimated attendance at March 28, 2026, “No Kings” protest. Mar 29, 2026
Table updated. Nov 07, 2025
Table updated to include estimated attendance at the “No Kings” protests on October 18, 2025. Oct 19, 2025
New article added. Jun 26, 2025
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