Universal indult
Universal indult is a term that was used primarily by traditionalist Catholics in a very specific sense. Since an indult signifies a favour granted to an individual or limited group, a similar measure applied to every member of a particular class of persons would in reality be a change of the law, not an indult. However, in spite of its self-contradictory character, traditionalist Catholics used the term "universal indult" to refer to a general permission that they hoped the Pope would grant to all Catholic priests who celebrate Mass in the Roman Rite to do so in  its Tridentine Mass form even publicly without first obtaining a specific indult or permission. Groups such as the Priestly Fraternity of St. Peter have standing specific indults to say the Tridentine Mass. The "motu proprio" that came. On 7 July 2007 Pope Benedict XVI issued the "motu proprio" "Summorum Pontificum", declaring that, while the "Roman Missal promulgated by Paul VI is the ordinary expression of the Lex orandi of the Catholic Church of the Latin rite", the "Roman Missal promulgated by St. Pius V and reissued by Bl. John XXIII is to be considered as an extraordinary expression of that  same Lex orandi"; for celebrations without the people ("sine populo"), all priests of the Latin Rite may freely use the Missal promulgated by Pope John XXIII in 1962 instead of the more recent editions (article 2), and that the priest in charge of a church may grant permission for parish celebrations with the 1962 Missal by priests who are "idoneous and not juridically impeded" (article 5). This "motu proprio" is not an indult: it does not grant permission, but instead lays down regulations governing the use in practice of the 1962 Missal, a use recognized as already legitimate in principle . While the form given to the Roman Rite by Pope Paul VI is now its ordinary form, the Tridentine form as last revised by Pope John XXIII may be used as an extraordinary form, as, for instance, the Sarum Rite has occasionally been used in modern times by Catholic Bishops. It also allows what some traditionalists would call novelties, such as proclaiming the Scripture readings in the vernacular language in Masses celebrated in the presence of the people (article 6). Claim that an indult was not needed. Before this "motu proprio" was issued, traditionalist Catholic groups, the largest of which  is the Society of Saint Pius X, which, even if not in formal schism, is in a situation of separation from the Church headed by the Holy See, claimed that no special authorization was required to celebrate the Tridentine Mass even publicly. They interpreted Pope Pius V's 1570 bull "Quo primum" as saying that the Tridentine Mass may be said in perpetuity. Bishop Fellay, the SSPX superior general, said, "So long as the Tridentine Mass is considered a particular concession, we remain marginalized, in a precarious and suspect position. It is in this perspective that we claim a right  that has never been lost: that of the Mass for everyone. To reduce this right to an indult (which certain Roman voices hold to be provisory) is already to diminish it." These groups wanted more than a universal indult, they wanted universal acceptance of the Tridentine Mass. Bishop Richard Williamson has said: "The downside [of accepting a universal indult] is, of course, that a number of lines will be blurred which are presently clear, separating true Tradition from any kind of compromise. Also, the "very idea of the intrinsically legitimate Tridentine Mass needing an 'indult' is false." But I think , over all, much more good than harm would come from the True Mass being 'liberated'." The following arguments are used against the view that the Roman Missal promulgated by Pope Pius V in 1570 was to be considered valid for all times and could not be altered even by later Popes: