Catholicism may be a 'calm faith' now, but neither the Gospels nor the Acts of the Apostles depict a sea of serenity, but stark choices depending on the reaction of the people of the time to Jesus Christ. St Stephen's martyrdom, as recounted in today's Gospel is just one example. I'm not really very good at spreading the Faith by word, though I do have my moments. On such occasions, I often later reflect and think I have been either imprudent in speech or lacking in charity, or zeal, or both. That said, I understand we should always have an answer ready when asked about 'the reason for our hope'. In general I agree with Fr Alexander Lucie-Smith, but the history of the Church has always given us reasons to believe that there is a place in the Catholic Church for the 'fruitloop'. We have our St Thomas Aquinases and we have our St John the Baptists and St Joan or Arcs - both types are invariably met with a certain 'resistance'.
Catechism of the Catholic Church (675)
Before Christ’s second coming the Church must pass through a final trial that will shake the faith of many believers. The persecution that accompanies her pilgrimage on earth will unveil the “mystery of iniquity” in the form of a religious deception offering men an apparent solution to their problems at the price of apostasy from the truth. The supreme religious deception is that of the Antichrist, a pseudo-messianism by which man glorifies himself in place of God and of his Messiah come in the flesh. ~ Catechism of the Catholic Church (675)