The Paix liturgique organisation last letter warn the Catholic Roman Church.
It is worth underscoring that it was only pressure from an uncontrollable movement of contestation that led the Roman legislator to interpret the promulgation of the 1969 Missal as non-binding. This was done in stages: in 1984 came Quattuor abhinc annos; in 1988 Ecclesia Dei; in 2007 Summorum Pontificum.
Juventus Traditionis 