National Legion of Decency

The National Legion of Decency, also known as the Catholic Legion of Decency, was an American Catholic group founded in 1934 by the Archbishop of Cincinnati, John T. McNicholas, as an organization dedicated to identifying objectionable content in motion pictures on behalf of Catholic audiences. Members were asked to pledge to patronize only those motion pictures which did not "offend decency and Christian morality".

Source: Wikipedia — National Legion of Decency (CC BY-SA 4.0)