What law initiated the mass rehabilitation of innocent victims of political repression?

The first rehabilitation measures were taken during the thaw. Then the victims of Stalinist repressions were released. On October 18, 1991, a law was issued on the mass rehabilitation of victims of political repression and Soviet terror. In most cases, political prisoners, dissidents and oppositionists who fought for democratic freedoms and the establishment of a new regime in the USSR were released from custody. The authorities considered about 900 thousand applications for the restoration of the rights of people sent to prison illegally.