New Los Angeles County District Attorney George Gascón, said Monday after taking office that cash bail will be ended for many offenses and sentences in thousands of cases will be reevaluated.

A former San Francisco district attorney and assistant Los Angeles police chief, Gascón has already drawn the ire of prosecutors in his own office, as well as members of the Los Angeles Police Department. His first major meeting upon winning his race was with Black Lives Matter organizers, who were critical of outgoing District Attorney Jackie Lacey.

Gascón also said his office would reevaluate and potentially resentence defendants who had been convicted with enhancements or California’s three-strike law, which requires a state prison term of 25 years to life. Gascón estimated such a move could affect at least 20,000 cases, KTLA reports.