From the "Letter to Friends and Benefactors" of the Superior General of the Society of Saint Pius X (FSSPX / SSPX).
...The King of peace, Rex pacificus. Here we would like to elaborate somewhat on this truth, which is so to speak at the heart of the crisis that is shaking the Church and affects the relations of the Society of St. Pius X with the Holy See.
Indeed, it seems to us that the basis for the current problem can be summed up as a loss of faith in the divinity of Our Lord Jesus Christ. Oh! Of course many people protest that they believe that Jesus is God, but very few are ready to draw the practical consequences of that truth which will manifest itself in the sight of the whole world at the end of time....
Our Lord is the Head of the Church. But since He willed that His Church should be visible, after His ascension into heaven, He gave her a visible head, who is His Vicar on earth, Peter and his successors…. To him alone did Our Lord give the power to feed the sheep and the lambs, he alone has full, sovereign, and immediate authority over each and every member of the Church. That is why the Church has always proclaimed herself to be a monarchy, governed by one man. Certainly, the human character of government makes it quite understandable to seek counsel and the advice of wise persons, but a form of democracy imported into the Church by collegiality and by the parliamentary parody of bishops’ conferences allows all sorts of abuses and subjects to group pressure the decrees of Divine Law that declare that each diocese has only one head, the bishop of the locality.
Authority today is seriously shaken, not only outside, through the litigation of secular leaders who claim a share in government, but also within the Church, through the addition of a number of councils and commissions which, in today’s atmosphere, prevent the just exercise of the authority delegated by Our Lord Jesus Christ.
[Source: La Porte Latine/ translation: SSPX United States District]