The new regime did not unleash the harsh reprisals of 1972. Its effort to gain public trust was eroded when it decreed an amnesty for those who had called for, carried out, and taken credit for the killings. Analysts have called this period the beginning of the "culture of impunity." Other analysts put the origins of the "culture of impunity" earlier, in 1965 and 1972, when a small number of identifiable Hutus unleashed massive killings of Tutsis.