Institutional Act Number Two (Ato Institucional Número Dois)

Institutional Act Number Two (Ato Institucional Número Dois)
Name	Institutional Act Number Two
Native name	Ato Institucional Número Dois
Long title	Ato Institucional Número Dois
Enacted by	Brazilian military regime
Date enacted	27 October 1965
Signed by	Artur da Costa e Silva
Repealed by	1988 Constitution (partially)
Jurisdiction	Brazil

Institutional Act Number Two (Ato Institucional Número Dois) was a decree issued on 27 October 1965 by President Artur da Costa e Silva during the 1964–1985 military regime. It abolished existing political parties, centralized power in the executive, and altered electoral and judicial procedures, accelerating a process inaugurated after the 1964 coup. The act played a pivotal role in restructuring the National Congress, reshaping the Supreme Federal Court appointments, and influencing subsequent measures such as Institutional Act Number Five.

Background and Political Context

In the months after the 1964 coup d'état, the administration of Humberto de Alencar Castelo Branco and later Artur da Costa e Silva confronted persistent opposition from figures linked to João Goulart and organizations like the ALN and the PCB. Fears articulated by leaders such as Carlos Lacerda and institutions including the Brazilian Army and the Ministry of War about alleged subversion and alleged influence from the Cuban Revolution and Cold War actors informed policy. Preceding measures—Institutional Act Number One, decrees by the Superior Electoral Court, and interventions in states like Guanabara and Rio de Janeiro—set a trajectory toward legal authoritarianism that culminated in the act.

Provisions and Legal Changes

The act mandated the dissolution of existing parties, enforced by creating a two-party system comprising the pro-government ARENA and the controlled opposition MDB. It empowered the president to remove elected officials, mandate indirect elections for Senate seats, and annul mandates through instruments used by the Superior Court of Justice and the Supremo Tribunal Federal. Changes included suspension of political rights for citizens, redefinition of electoral calendars used by the Electoral Justice and modifications to the status of deputies from states such as São Paulo, Minas Gerais, and Bahia. The decree altered judicial review procedures affecting the 1946 Constitution framework and concentrated appointment powers for regional governors and municipal interventors.

Immediate Political Effects and Repression

Immediate consequences included purges within legislatures, removal of senators and deputies linked to João Goulart and Luís Carlos Prestes, and the imprisonment or exile of activists associated with Leopoldo Goulart? and other leftist movements. Security organs such as the DOPS, the SNI precursor, and military police units increased repression in urban centers like São Paulo and Rio de Janeiro. Prominent figures—journalists from outlets like O Estado de S. Paulo and opposition politicians including Ulysses Guimarães—faced censorship, suspension of mandates, or bans from public office. The legal framework facilitated actions by military tribunals and administrative councils that targeted members of unions affiliated with the unions and student groups tied to the UNE.

Impact on Brazilian Institutions and Constitution

By modifying the balance of powers, the act weakened the Congress and fortified the presidency of Artur da Costa e Silva, setting precedents followed under Emílio Garrastazu Médici and Ernesto Geisel. The act's constraints on political competition influenced constitutional engineering culminating in Institutional Act Number Five and the later 1967 Constitution of 1967. It altered practices in appointments to the Supremo Tribunal Federal and reshaped relations with states such as Goiás and Paraná via federal interventions. The institutional changes affected electoral mechanisms run by the Tribunal Superior Eleitoral and prompted debates among jurists at institutions like the University of São Paulo law faculty and the Catholic University of Rio de Janeiro.

Domestic and International Reactions

Domestically, political leaders from the MDB and journalists at outlets such as Folha de S.Paulo criticized the act, while conservative elites and military leaders applauded the consolidation. Student protests linked to the UNE and labor leaders in ABC Paulista signaled resistance. Internationally, governments including the United States under Lyndon B. Johnson and diplomats stationed in Brasília monitored developments; some Western capitals indicated pragmatic support via diplomatic channels, whereas leftist governments like Cuba condemned the repression. Human rights organizations and Pan-American bodies debated responses at forums such as the Organization of American States.

Legacy and Historical Assessment

Historians and political scientists at institutions like UNICAMP and commentators such as Olavo Frias Filho evaluate the act as a decisive step toward authoritarian legalism that curtailed pluralism and enabled systematic human rights violations documented by commissions like the National Truth Commission. Legal scholars compare the act's effects with other counterrevolutionary statutes in Latin America, referencing events like the 1973 Chilean coup and the policies of Aliança Popular Revolucionária Brasileira? in analyses of Cold War repression. The act's memory informs contemporary debates in the Chamber of Deputies and in civil society groups such as Movimento Passe Livre and activists commemorating victims of the dictatorship.

Category:Brazilian military dictatorship Category:1965 in Brazil