Pius "the infallible" condemned, separation of church and state. Said the church had power to use force, could be the only religion of the state, comdemned free speech, must be Catholic to be saved, etc...
It's about temporal power or at least it used to be. Vatican II buffed off the rough edges. Many of the statements in the "syllabus" that were condemned are now ignored.
If we let you "interpret" Catholic history for us we might as well read it from the editorial page of the New York Times or hear it from Ed Schultz. What was actually affirmed by Pius was:
"We are told by the word of the Gospel that in this His fold there are two swords—a spiritual, namely, and a temporal. […] Both swords, the spiritual and the material, therefore, are in the power of the Church; the one, indeed, to be wielded for the Church, the other by the Church; the one by the hand of the priest, the other by the hand of kings and knights, but at the will and sufferance of the priest."
When Pope Pius IX issued his encyclical Praedecessores Nostros condemning the English policies in famine stricken Ireland the British press went into full attack mode. You, dear Bkaycee are still dancing to their tune and eating their garbage.