"Magnum crimen: pola vijeka klerikalizma u Hrvatskoj" (i.e. "Major accusation: Half a century of clericalism in Croatia") is a book first published in Zagreb in 1948. The book was written by a Croatian Roman Catholic priest, Dr. Viktor Novak (1889 - 1977), who was also a professor at Belgrade and Zagreb Universities, and the member of the Yugoslav Academy Science and Arts. In this book, Novak wrote about (Roman Catholic) clericalism in Croatia from the beginning of the 20th century to the end of World War II.