Not to generalize, but it seems that organizations that exist to defame the Catholic priesthood are guilty of defaming individual priests.

Federal judge issues sanction against SNAP for violating discovery orders.

After the priest was accused of being a child molester, he sued SNAP and others for a conspiracy to defame him on the grounds of being a Catholic priest. Then, SNAP wilfully failed to comply with orders to turn over documents, which resulted in the federal judge issuing sanctions determining that the conspiracy charge had been established.