Fact check: What no kings protest were the largest

1. Summary of the results

Based on the analyses provided, the "No Kings" protests appear to have been among the largest demonstrations in recent U.S. history. Multiple sources confirm substantial participation numbers:

• The American Civil Liberties Union reported more than 5 million people participated in over 2,100 rallies and protests across the nation ^[1]
• Independent observers suggested turnout could have been as high as 7 million participants across more than 2,000 protests spanning from big cities to small towns ^[2]
• The protests took place across all 50 states and commonwealths, with organizers preparing for millions of participants ^{[3] [4]}
• Some experts believe the "No Kings" protests may have been the largest single-day demonstration in U.S. history ^[5]

At the state level, the protests also broke records, with an estimated 42,000 Vermonters attending, making it one of the biggest one-day demonstrations in Vermont's state history ^[5].

2. Missing context/alternative viewpoints

The original question lacks several important contextual elements:

• The protests were specifically against Donald Trump's policies following his return to office ^{[3] [4]}
• The demonstrations were characterized as peaceful and law-abiding ^[6]
• There are varying estimates of participation, with organizers claiming 5 million while independent observers suggested up to 7 million ^[2]
• The protests represented the largest single-day mobilization since Trump returned to office ^[3]
• Philadelphia hosted the largest individual protest among the nationwide demonstrations ^[7]

The question also doesn't acknowledge that while the protests were massive, the claim of being "the largest" comes with qualifiers - they may have been the largest single-day demonstration or the largest since Trump's return to office, rather than the largest protest movement in all of U.S. history.

3. Potential misinformation/bias in the original statement

The original question contains a grammatical error ("what no kings protest were the largest") that makes it unclear whether the user is asking about the scale of the protests or comparing them to other movements. This ambiguity could lead to misinterpretation.

Additionally, the question lacks specificity about the timeframe and context of these protests. Without mentioning that these were anti-Trump demonstrations in 2025, readers might not understand the political significance or timing of these events.

The sources show potential bias in reporting, as organizers' estimates (5 million) differ from independent observers' estimates (up to 7 million) ^[2], suggesting that protest organizers may have incentives to either underreport or overreport attendance depending on their strategic goals.