With all due respect, that must be due to ignorance.
In just the space of 3 years RCs were posting such open threads as:
Protecting God's Word From Bible Christians - Free Republic Book Review: The Protestants Dilemma: A Review (Part One, Two, and Three): The Papacy
There Is No Salvation Outside The Catholic Church (Extra Ecclesiam Nulla Salus)
Divinum Officium: Whoever does not embrace the Catholic Christian religion will be damned
Why Catholicism Is Preferable to Protestantism
The Protestants Dilemma: A Review
Protecting Gods Word From Bible Christians
Why do Protestant lay people hate clergy?
Protestants: Its time to come back
From Fundamentalist Baptist to Catholic
EWTN - The Journey Home - November 10, 2014 - Dale Ahlquist, convert from being a Baptist
The Trouble With Calvin Pt. 1
Why would anyone become Catholic?
In Defense of the Immaculate Conception: Part 2
The Nature of the Mass and the need for Sacrifice
The Hail Mary of a Protestant
500 Years of Chaos: Protestantisms Anniversary
And we have seen such things from Catholics as thanking God the Spanish Inquisition was up to the task,
that Protestantism is belief in ones self, and absolutely alien to Christianity, and that,
Protestants are mostly biblically illiterate,
intellectually dishonest,
evil fruit, who don't have the Holy Spirit, and
are not part of the Body of Christ, and
who have no foundation for their understanding of Christianity, and
will not be saved unless they become Catholic, and
who are by nature vandals who should be eradicated from the face of the earth, etc. But that Catholics never put down or challenge beliefs from protestants, and that,
there never has been a bit of anti-protestant bigotry on FR, .
You left off: The de-horning and tail docking of Evangelical Christians
Pfft! Old news!!!
"One indeed is the universal Church of the faithful, outside which no one at all is saved, in which the priest himself is the sacrifice, Jesus Christ, whose body and blood are truly contained in the sacrament of the altar under the species of bread and wine; the bread (changed) into His body by the divine power of transubstantiation, and the wine into the blood, so that to accomplish the mystery of unity we ourselves receive from His (nature) what He Himself received from ours."
--Pope Innocent III and Lateran Council IV (A.D. 1215)