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| 1967, Jan. 22 |
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| Congress approved a new constitution greatly strengthening presidential powers and federal control over the states. | 1 |
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| 1968, March–April |
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| Widespread student protests were waged against the repressive policies of the government and firings of dissident professors. | 2 |
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| April |
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| Fifteen thousand metalworkers in Minas Gerais struck after taking several factory managers hostage. After this and other wildcat strikes during 1968, the labor movement was brutally crushed and its leaders exiled or imprisoned. | 3 |
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| April 4 |
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| Police assaulted a crowd of 30,000 attending the funeral of a student slain by security forces. | 4 |
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| June 28 |
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| The March of the 100,000 took place in Rio de Janeiro, rallying the opposition. | 5 |
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| Dec. 13 |
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| ESTABLISHMENT OF BLATANT AUTHORITARIAN REGIME. Hard-liners in the military won out as Pres. Costa e Silva suspended Congress indefinitely, assumed power to rule by presidential decree, and instituted drastic censorship. The new Institutional Act No. 5 gave the president power to proclaim a state of siege and to suspend political rights. The government made mass arrests of dissenters and began using torture systematically. | 6 |
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