Brazil (BRA)South America, AmericasNovember 11, 1955
Event Summary
On November 11, 1955, Brazilian War Minister General Henrique Teixeira Lott led a military "preventive coup" (also called a "counter-coup" or, per contemporary New York Times coverage, an "anti-coup") that deposed acting President Carlos Luz, who was suspected of scheming to block the inauguration of President-elect Juscelino Kubitschek. The immediate trigger was Luz's refusal to discipline Colonel Jurandir Mamede, who had publicly called for annulling the election results. Luz was removed from power (he attempted to flee to the cruiser Almirante Tamandaré and was forced to promise to resign upon landing), and Senate Speaker Nereu Ramos was installed as interim president; days later, on November 21, 1955, former president Café Filho was also placed under effective house arrest and barred from resuming office.
Kubitschek was peacefully sworn in as president in January 1956, completing the succession the coup had been intended to secure.
Researched Details
Partially researched
Independent research, added record by record. Hover any label for what it means.
Target identified in Coup Atlas research: Carlos Luz, acting President of Brazil
Juscelino Kubitschek (President-elect, inaugurated Jan 1956)
Marshal Odylio Denys (military supporter of coup)
Sources
On November 11, 1955, General Henrique Teixeira Lott, the War Minister, led a military 'preventive coup' that deposed acting President Carlos Luz, who was suspected of plotting to prevent President-elect Juscelino Kubitschek from being inaugurated.
INDIRECT CITATIONWikipedia, 'Preventative Coup of November 11' article — content confirmed, but the inline citation actually attached to this claim is Agência Senado (Ricardo Westin, 'Há 60 anos, crise fez Brasil ter 3 presidentes numa única semana', Senado Notícias), NOT Dulles 1970 as the original entry claimed. Dulles 1970 is cited elsewhere in the same article for other details.open source ↗
The coup was triggered when Carlos Luz refused to punish Colonel Jurandir Mamede after Mamede publicly called for the election results favoring Kubitschek to be overturned.
INDIRECT CITATIONWikipedia, 'Preventative Coup of November 11' article — confirmed the article contains this narrative, but the citations do not match the original entry's claim. Mamede's public speech is cited to Chin, Wright & Carter, 'Historical Dictionary of Modern Coups D'état' (2022), and the clause 'Luz refused to punish Mamede' carries NO inline citation at all. The New York Times, Nov 12 1955 article (originally claimed as the source) is cited elsewhere in the piece only to support the term 'anti-coup,' not this trigger claim.open source ↗
Following Luz's removal, Senate Speaker Nereu Ramos assumed the presidency on November 11, 1955, serving as interim head of state until Kubitschek's inauguration.
INDIRECT CITATIONWikipedia, 'Nereu Ramos' article states this, but the sentence carries no inline citation. The article's only three references are a Brazilian Federal Senate roster page, a Chamber of Deputies roster page, and an unrelated 2014 news article about a plane crash — Dulles 1970, as the original entry claimed, is not cited anywhere on this page. (The companion 'Preventative Coup of November 11' article does cite Dulles 1970 for Ramos holding the presidency until Kubitschek took office.)open source ↗
Carlos Luz attempted to flee Rio de Janeiro aboard a naval cruiser but was forced to resign/was removed from power; former president Café Filho was subsequently barred from resuming office and placed under effective removal around November 21, 1955.
INDIRECT CITATIONWikipedia, 'Preventative Coup of November 11' article — content confirmed (cruiser 'Almirante Tamandaré' flight to Santos, forced promise to resign; Café Filho's apartment/palace surrounded and Café Filho placed under house arrest on Nov 21, 1955), but the citations do not match the original entry. The cruiser flight/forced resignation is cited to Dulles 1970; the Café Filho house-arrest detail is cited to a Time magazine article ('BRAZIL: What, Another Coup?'). Chin, Wright & Carter 2022 — the source the original entry claimed — was not found attached to this passage.open source ↗
Juscelino Kubitschek was peacefully inaugurated as President of Brazil in January 1956, completing the succession the coup had been intended to secure.
INDIRECT CITATIONWikipedia, 'Preventative Coup of November 11' article states Ramos held the presidency 'until Kubitschek took office in January 1956,' citing Dulles 1970 and Bello/Taylor/Poppino, 'A History of Modern Brazil: 1889-1964' (1966) — this part is genuinely Dulles-sourced, but on the Coup article, not the Nereu Ramos article as the original entry claimed. The specific day '31' (Jan 31, 1956) appears only in the 'Nereu Ramos' article, and that specific sentence carries no citation at all, so the exact date should be treated as unverified precision.open source ↗
Editorial Note
All facts sourced via Wikipedia's "Preventative Coup of November 11" and "Nereu Ramos" articles, labeled CHAIN because the underlying primary sources (Dulles 1970 book, 1955 New York Times article, Chin/Wright/Carter 2022 dictionary) could not be directly accessed this session (paywalled/not retrievable). A direct WebFetch attempt on Britannica's Brazil history page returned no usable content on this event, and a TIME magazine archive article returned a 403 error, so no independent VERIFIED source could be confirmed this session. | No facts were originally labeled VERIFIED, so no VERIFIED-source re-fetches were performed (checked=0); all 5 facts were CHAIN and were sanity-checked by directly fetching both cited Wikipedia articles ('Preventative Coup of November 11' and 'Nereu Ramos') via WebFetch (direct curl to en.wikipedia.org was blocked by the environment's egress proxy with a 403, so WebFetch was used instead and succeeded). Both Wikipedia articles are real and their core narrative content (Lott/Luz/Mamede/Ramos/Café Filho/Kubitschek chronology, the cruiser Almirante Tamandaré flight, the Nov 21 1955 house arrest of Café Filho, the Jan 1956/Jan 31 1956 inauguration) matches all 5 facts, so none were removed. However, every single fact's claimed named source (Dulles 1970 / NYT Nov 12 1955 / Chin-Wright-Carter 2022) was found, on inspection of the actual inline footnotes on the cited Wikipedia pages, to be either attached to a DIFFERENT specific source than claimed, or in two cases (facts 3 and 5's 'Nereu Ramos' attribution) attached to NO citation at all — the 'Nereu Ramos' Wikipedia article's only three references are Brazilian Senate/Chamber rosters and an unrelated 2014 plane-crash news story, never Dulles. This is a real and reproducible pattern of citation misattribution (verified across 7 separate targeted fetches), not a one-off error, so the entry could not be certified CLEAN. All facts are downgraded from confidently-cited CHAIN to CHAIN-with-corrected-source, spelling out what Wikipedia actually cites (or fails to cite) for each specific claim. Content itself was not found to be fabricated or false.
Cross-Reference
Datasets agree. At least two of the three reference datasets we check against carry this event, and none of them disagrees about its date or its result.
Identifiers for finding this same event in the other datasets:
Coup Atlas research identifies the target as: Carlos Luz, acting President of Brazil.
Baseline coding: Incumbent executive removed from power. Recorded leader fate: deposed; not physically harmed. The baseline file does not name individual targets; researched names are kept in a separate layer.
Baseline Dataset Citation
Cline Center Coup d’État Project Dataset, v2.2.2
Peyton, Buddy, Joseph Bajjalieh, Michael Martin, and Andrea Gerald. 2026. Cline Center Coup d’État Project Dataset. Cline Center for Advanced Social Research. V.2.2.2. February 17. University of Illinois Urbana-Champaign. doi: 10.13012/B2IDB-9651987_V10
“BRAZIL’S LEADERS ASK MARTIAL LAW TO BAR PRESIDENT Chiefs of the Armed Forces Back Step to Prevent Cafe From Resuming Office HE SEEKS A COURT WRIT But Congress Begins Action Toward Blocking His Move to End Virtual Arrest BRAZIL’S LEADERS ASK MARTIAL LAW,” November 23, 1955
“COUP’S OPPONENTS IN BRAZIL GIVE UP: Deposed Acting President Is Ending Flight – Army Halts Threats at Air Bases,” November 13, 1955
Christian Science Monitor
“Army Coup Ousts Brazilian Regime: Coup to Block a Coup?” November 12, 1955
This is the citation trail carried by the baseline dataset, grouped by outlet and rejoined from the line-wrapped original. Coup Atlas has not independently re-checked every document; read the original before citing a specific claim. URLs the import damaged beyond safe repair are shown as plain text and listed in citations-report.md. How this list is built →