The Church of Scientology is the largest organization evoted to the practice and the promotion of the Scientology belief system. The Church of Scientology International is the mother church of the Scientology religion, and is responsible for the overall ecclesiastical management, dissemination and propagation of Scientology. Every Church of Scientology is separately incorporated and has its own local board of directors and executives responsible for its own activities and well-being, both corporate and ecclesiastical. The church has been the subject of much controversy and was convicted in 1979 of illegal activities, including the largest theft of government documents in U.S. history.