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Twenty-Five Years After 9/11, Conspiracy Theories Challenge Historical Fact

A new survey among Muslims and non-Muslims finds substantial acceptance of claims blaming Zionists or the CIA, alongside widespread uncertainty among young adults about who carried out the attacks.
A U.S. Marine stands at the 9/11 Memorial in New York
A U.S. Marine stands at the 9/11 Memorial in New York. (U.S. Marine corps/Lance Cpl. Landon Heredia)

Table of Contents

Summary

Survey results indicate substantial differences across religious, generational, and partisan groups in beliefs about 9/11, national-security threats, and U.S. institutions. The widest reported difference concerns attribution of the 9/11 attacks, despite official investigations establishing Al-Qaeda’s responsibility. (9/11 Commission) Younger respondents also displayed comparatively high uncertainty, while partisan groups differed over whether major threats are primarily foreign or domestic. These divisions extend to attitudes toward controversial anti-American rhetoric and whether schools should be required to teach a standardized 9/11 curriculum.

Key Takeaways

  • Large demographic gaps appear in beliefs about 9/11 and national-security threats. Among the surveyed groups, 62.24% of non-Muslim respondents identified Al-Qaeda as responsible for 9/11, compared with 23.56% of Muslim American respondents. The established historical record attributes the attacks to Al-Qaeda and Osama bin Laden’s network.
  • Political affiliation and age are also associated with substantial differences. Younger respondents showed greater uncertainty about responsibility for 9/11, while Democrats, Republicans, and independents differed in their perceptions of domestic versus foreign threats and in their reactions to Hasan Piker’s statement.
  • Views on historical education are divided. A majority of surveyed non-Muslims supported a government-mandated 9/11 curriculum, compared with 44.71% of Muslim American respondents, with more than one-third of the latter selecting a neutral response.

This briefing outlines the critical takeaways from an analysis of 416 Muslim American respondents against 429 isolated non-Muslim respondents and broader generational/partisan cohorts (including a general population cohort of 513 respondents, including 24 who identified as Muslim). The data documents a severe disintegration of a shared American reality, operating across two major vectors: a profound socio-religious chasm and a sweeping decay of historical factuality within the general public.

Statistical Baseline & Precision Tracking

  • The Baseline General Population (N=513): Holds a ±4% margin of error.
  • The Isolated Non-Muslim Sample (N=429): Holds a ±5% margin of error.
  • The Muslim American Sample (N=416): Holds a ±5% margin of error.
  • Data collected between September 10 and September 16, 2026 (general population sample data completed on September, 11, 2026).

I. The Core Socio-Religious Chasm (Muslim Americans vs. Non-Muslims)

  • The 38.68-Point Historical Disconnect: A solid 62.24% (±5%) of isolated non-Muslims attribute 9/11 to its true historical perpetrators, Al-Qaeda. Conversely, only 23.56% ± 5% (98 respondents) of domestic Muslim Americans accept this factual baseline.
  • Communal Conspiracy Adoption: Instead of Al-Qaeda responsibility, the Muslim American cohort shifts decisively to alternative frameworks: 27.40% ± 5% (114 respondents) view the attacks as a Zionist operation and 18.51% ± 5% (77 respondents) view them as a CIA inside job.
  • Resilience Against Assimilation: Despite 100% of the Muslim cohort currently residing and working within the United States, their worldviews have not flattened to match the host country’s baseline, demonstrating that deep-seated religious and cultural frameworks remain highly resilient against geographic integration.

II. Public Toleration of Anti-American Rhetoric (The Piker Remarks)

The study evaluated public tolerance for radical critiques of American foreign policy by tracking reactions to commentator Hasan Piker’s controversial statement that “America deserved 9/11”. The responses uncover a stark divide between centrist rejection and emerging ideological vulnerability:

  • The Muslim American Fracture: Only 47.11% of Muslim Americans actively disagree or strongly disagree (vs. 71.33% of non-Muslims) with the statement. A combined 28.13% either agree or strongly agree (vs. 12.82% of non-Muslims), while 24.76% remain neutral (vs. 15.85% of non-Muslims). This indicates that a large segment of the community processes the remarks as a valid, albeit extreme, structural critique of U.S. policy.
  • The Partisan Bleedover: Creeping tolerance for this radical critique is no longer restricted to a socio-religious minority; it has actively bled into mainstream political extremes. While non-Muslim Republicans exhibit a firmer rejection baseline (55.07%) than Democrats (43%), both major political parties contain identical, highly resilient minority blocks (~26% combined total agreement) that express sympathy or agreement with the anti-imperialist sentiment.
  • Centrist Bulwark: Independent voters form the absolute anchor of mainstream patriotic boundaries, logging the highest rate of active disagreement with Piker’s remarks at 64.80%.

III. Current Threat Beliefs & Perceptions

  • The Total Breakdown of a Unified Vocabulary: National security tracking has completely fractured along demographic lines, meaning respondents no longer agree on whether existential danger originates from foreign or domestic actors.
  • The Traditional External Focus: The isolated non-Muslim sample (42.89% ± 5%), anchored heavily by pure Republicans (57.97%), firmly maintains a classic external defense posture, identifying Iran and radical Islamists as the preeminent danger.
  • The Mainstream Partisan Split: Mainstream non-Muslim political voting blocs look in opposite directions. In contrast, Republicans look outward; 22% of Democrats internalize the threat landscape to identify domestic right-wing white supremacists as a peer-level danger to U.S. soil.
  • The Converging Inverted Threat Matrix: The Muslim American cohort and the Native Youth cohort (Ages 18–29) independently bypass foreign jihadism entirely to focus security anxieties onto domestic state institutions and traditional foreign allies:
    • Zionist Threat Spike: Israel/Zionists are labeled the premier threat by 24.76% ± 5% (103 respondents) of Muslim Americans and an astonishing 20% of all young Americans under 30—contrasting sharply with the isolated non-Muslim average of 9.32% ± 5%.
    • Institutional Government Distrust: A plurality of Muslim Americans—26.20% ± 5% (109 respondents)—name the CIA or other U.S. government agencies as the single greatest danger for a future mass-casualty event. Non-Muslim young adults mirror this internal suspicion, pointing to their own government at double the frequency (15.24%) of their elders.

IV. The Post-Factual Erosion Within the General Population

  • Generational Memory Collapse: Basic historical consensus is entirely failing among young adults under 30, where Al-Qaeda attribution drops to just 40%.
  • The “Unsure” Vulnerability: A staggering 28.57% of under-30 youth admit they are completely “unsure” who was responsible, signaling passive historical erasure that leaves them highly susceptible to digital manipulation.
  • Partisan Conspiracy Laundering: Mainstream political polarization acts as a secondary engine, copying and re-tailoring conspiracy theories to target domestic political rivals.
    • The Left-Wing Vector: 23% of Democrats have adopted the “Zionist operation” narrative to fuel modern anti-imperialist critiques.
    • The Right-Wing Vector: 16.67% of Republicans have adopted the “CIA inside job” narrative, weaponizing it to reinforce modern “Deep State” animosity.

V. The Centrist Baseline & The Educational Mandate Split

  • Independent Stability: Independent voters hold the line as a non-paranoid anchor, maintaining high historical factuality (60.80%), maximum rejection of radical anti-American rhetoric (64.80%), and the lowest institutional paranoia (7.20%).
  • The Educational Mandate Split: The final, most structural line of fracture lies in state schooling policies. A government-mandated 9/11 curriculum is fiercely backed by non-Muslims (62.00% ± 5% combined majority, led by 77.53% of Republicans, 66.00% of Democrats, and 60.80% of Independents) as a tool for national preservation.
  • Minority Deficit: Support for a government curriculum plummets to a minority plurality of 44.71% ± 5% (186 respondents) among Muslim Americans (23.08% agree, 21.63% strongly agree), while a massive 35.34% ± 5% (147 respondents) choose complete neutrality.

Master Consolidated Cross-Analysis Matrix (With Error Margins)

Metric / Variable Group Gen. Pop 🏛️ (N=513) MoE: ±4% No Muslim Filter 🏛️ (N=429) MoE: ±5% Muslim Americans 🌙 (N=416) MoE: ±5% Democrats 🔵 (N=200) Republicans 🔴 (N=138) Independents 🟢 (N=125) Youth 📱 Ages 18–29 (N=105) Older 📺 Ages 45+ (N=268)
Q1: Al-Qaeda Blame 55.17% 62.24% 23.56% 53.50% 57.25% 60.80% 40.00% 66.04%
Q1: Zionist Theory 16.76% 10.26% 27.40% 23.00% 15.94% 13.60% 19.05% 17.54%
Q1: CIA Inside Job 9.36% 7.46% 18.51% 6.50% 16.67% 8.00% 11.43% 4.85%
Q2: Piker Disagree 52.24% 58.74% 47.11% 43.00% 55.07% 64.80% 41.90% 57.09%
Q3: School Mandate 64.32% 62.00% 44.71% 66.00% 77.53% 60.80% 52.38% 67.54%
Q5: Threat: Islamists 42.88% 42.89% 20.67% 38.50% 57.97% 44.80% 24.76% 57.46%
Q5: Threat: Zionists 10.53% 9.32% 24.76% 11.00% 10.87% 8.80% 20.00% 4.85%
Q5: Threat: Supremacists 16.96% 18.65% 10.82% 22.00% 7.97% 19.20% 16.19% 15.30%
Q5: Threat: CIA / Gov 11.11% 8.86% 26.20% 11.00% 15.22% 7.20% 15.24% 7.84%
FAQ
Who does the established historical record identify as responsible for 9/11?
The bipartisan 9/11 Commission concluded that the attack was driven by Osama bin Laden and developed through Al-Qaeda, while the FBI identifies all 19 hijackers as Al-Qaeda-trained.
Are the differences limited to Muslim and non-Muslim respondents?
No. Significant differences also appear across age and political affiliation, particularly concerning historical attribution, perceptions of national-security threats, institutional distrust, and reactions to controversial political rhetoric.
How precise are the survey percentages?
The reported margins of error are approximately ±4 percentage points for the 513-person general-population sample and ±5 points for both the 429-person isolated non-Muslim sample and the 416-person Muslim American sample. Consequently, small differences between groups may not be statistically meaningful, while very large gaps are less likely to be explained by sampling error alone.

Dr. Irwin J. Mansdorf

Irwin J. (Yitzchak) Mansdorf, PhD., is a clinical psychologist and a fellow at the Jerusalem Center for Security and Foreign Affairs specializing in political psychology.

Charles Jacobs

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