The prisoner population could be divided into roughly three groups. The 'transported' were convicts sentenced under common law, ranging from eight years up to life, for crimes ranging from physical and sexual assault to murder. These were mostly taken to the prison at Île Nou and worked on the construction of roads and buildings in the colony. Political prisoners, or the 'deported', made up the second group. Many of these participated in the Paris Commune of 1871, 4250 of whom were sent either to Île des Pins or Ducos, including Louise Michel and Henri Rochefort. After they were all granted amnesty in 1880, less than 40 families decided to stay in New Caledonia. Another group of 'deportees' were participants in the Mokrani Revolt of 1871-72 in Algeria, the majority of whom decided to stay in New Caledonia following the granting of amnesty in 1895 and from whom the majority of Algerian New Caledonians in Bourail are descended. Recidivists, or the 'relegated', made up the third group, 3757 of whom were sent from 1885 onwards to New Caledonia, particularly to Île des Pins, Prony or Boulouparis. The 'transported' and 'relegated' stopped being brought to New Caledonia in 1897.