The 1970 Quebec crisis had serious repercussions on all components of the Canadian penal justice system in general, and on the Quebec judicial establishment in particular, including the legislature, the police, the investigative apparatus, the courts and corrections. In the legislative area, the terrorist campaign in Quebec caused the reactivation for the War Measures Act was unnecessary and an act of demagoguery. The wide discretionary powers granted to the police (e.g., emergency detention, suspension of habeas corpus) are here called excessive, although they received the support of the majority of the Quebec population, driven to a panic more by the Government's reactions than by the terrorist acts themselves. In reality, the perpetrators of the 1970 political crimes were not caught by the police exercising their emergency powers, but were apprehended later by patient and competent police investigators operating under routine police procedures. The prosecution of the arrested FLQ members violated the principle of separation of powers as a consequence of the obviously political undertones of the trials. Also ignored were the presumption of innocence of the accused (reversed to a presumption of guilt) and the right to due process. After sentencing, the convicted FLQ members complained of prolonged detention in maximum security facilities, of being treated more rigorously than their fellow-inmates, of frequent unmotivated transfers from prison to prison, and of capricious granting or withholding of parole without apparent reasons. While insisting that the FLQ defendants were common criminals, the police and the courts treated them nevertheless very differently, showing a lack of judicial sophistication and gross ineffectiveness. Police and judges are deemed to have acted as the instruments of repression of a privileged political ideology. Twelve references are appended.