I cannot tolerate […] that the […] people’s authority should be menaced from any quarter:  and that holds good above all for the Churches!  So long as these confine their activities to religious affairs, the State will not molest them.  But if they arrogate to themselves, through acts, decrees or Encyclicals, rights which are not theirs at all, we shall drive them back into their spiritual domains.

(source: New Light…)

Sounds familiar, no?