The 1950s Pius XII liturgical reforms were trial balloons, created by the Mason Bugnini and company, for the Novus Ordo Mass that the same modernist gang created in 1969. But since these changes were promulgated by a true pope, Pius XII, would traditional Catholics still be “legally obliged” to follow them?
Father Anthony Cekada discusses the cast of characters involved, and answers this somewhat controversial question in this video.