Yang Shangkun
In September 1956, Mao admitted that the purges during the Anti-Bolshevik League incident, as well as the Futian incident, were a mistake, in which the wrong people were killed. In 1988, President Yang Shangkun commissioned an investigation into the Futian incident, which recommended the rehabilitation of the victims, but it was never followed up due to the Tiananmen Square protests and subsequent massacre.