Protest Participation
Estimated total U.S. participants in major political protests, 2011–2021
Estimated range of total U.S. participants in George Floyd protests, making it the largest protest movement in U.S. history
Estimated total single-day participants across the U.S., the largest single-day demonstration on record
Number of U.S. communities with Occupy encampments or protests during fall 2011
Estimated attendees at the Ellipse rally per the House Select Committee investigation
Estimated Participants by Event
Comparative Dataset
Context
The scale of U.S. political protests grew dramatically between 2011 and 2020. Occupy Wall Street, which began with roughly 1,000 people at Zuccotti Park in September 2011, spread to more than 600 communities nationwide over the following weeks. Peak single-day participation across all U.S. Occupy sites reached an estimated 100,000 on October 15, 2011, though the movement's sustained encampment model makes direct comparison with single-day marches difficult.
The 2017 Women's March set a new benchmark for single-day mobilization. The Crowd Counting Consortium, founded specifically to count the event, estimated between 3.3 million and 4.6 million U.S. participants across more than 500 locations on January 21, 2017. The Washington, D.C., march alone drew an estimated 500,000 people, with additional marches exceeding 100,000 in Los Angeles, New York, Chicago, and other cities.
The George Floyd protests beginning in late May 2020 surpassed all previous U.S. movements in estimated participation. Researchers at the Crowd Counting Consortium estimated between 15 million and 26 million total participants, with an average of 140 demonstrations per day at their peak. The January 6, 2021, rally at the Ellipse in Washington, D.C., drew an estimated 53,000 attendees according to the House Select Committee, making it substantially smaller in scale than the other events tracked here but significant for its role in subsequent events at the U.S. Capitol.
Citations & Data Sources
- 01.
Crowd Counting Consortium. Crowd Counting Consortium Data and Methodology. Joint project of Harvard Kennedy School and University of Connecticut; collected Women's March data in Jan 2017 estimating 3.3–4.6 million U.S. participants. Data published on Harvard Dataverse. Occupy Wall Street peak-day estimate (~100,000 across 600+ communities) compiled from aggregated city-level media reports.
ash.harvard.edu/programs/crowd-counting-consortium - 02.
Crowd Counting Consortium. Women's March Crowd Estimates (Pressman & Chenoweth). CCC co-directors Jeremy Pressman and Erica Chenoweth compiled crowd sizes for 500+ U.S. marches on January 21, 2017; best estimate of total U.S. participation: approximately 4.2 million
sites.google.com/view/crowdcountingconsortium/reports-trends - 03.
Harvard Kennedy School, Carr Center. Black Lives Matter May Be the Largest Movement in U.S. History. Based on CCC data and polling estimates; 15 million to 26 million people participated in George Floyd protests across the U.S. from late May through July 2020
www.hks.harvard.edu/centers/carr/publications/black-lives-matter-may-be-largest-movement-us-history - 04.
U.S. House Select Committee to Investigate the January 6th Attack. Final Report of the Select Committee (H. Rept. 117-692). Released December 22, 2022; cited estimate of approximately 53,000 people at the Ellipse rally on January 6, 2021
www.govinfo.gov/app/details/GPO-J6-REPORT - 05.
ACLED. US Crisis Monitor Releases Full Data for 2020. Armed Conflict Location & Event Data Project tracked over 10,600 protest events across the U.S. in 2020, with BLM-associated demonstrations accounting for the majority
acleddata.com/2021/02/05/us-crisis-monitor-releases-full-data-for-2020