Controversial convictions of Thomas Mooney and Warren Billings

Following the 1916 Preparedness Day Bombing, labor activists Thomas Mooney and Warren Billings were tried and convicted in proceedings that many contemporaries and later historians argued were flawed and politically motivated. The convictions were prosecuted through the San Francisco courts and enforced at the city's detention facilities; Thomas Mooney was eventually pardoned in 1939, and Billings's sentence was commuted and he was released. The case became a major international cause célèbre and remains a noted controversy in San Francisco legal history.