amnesty (n.) Look up amnesty at Dictionary.com
1570s, "a ruling authority's pardon of past offenses," from French amnistie "intentional overlooking" (16c.), from Latin amnestia, from Greek amnestia "forgetfulness (especially of wrong); an amnesty," from amnestos "forgotten; forgetful," from a- "not" (see a- (3)) + mnestis "remembrance," which is related to mnaomai "I remember" (see mind (n.)).

Usually specifically of pardons or offers of pardon for a class of offenses against a government. As a verb from 1809. The non-governmental organization Amnesty International was founded 1961 to call attention to the plight of prisoners of conscience, as Appeal for Amnesty; the name was changed 1963.