“And this is still true today in those parts of the world where Catholics continue to be persecuted for their faith”
Are they being persecuted for being Christian or for being Catholic?
You wrote:
“Are they being persecuted for being Christian or for being Catholic?”
In Muslims countries they’re persecuted for being Christians. In the other places they’re usually persecuted for being specifically Catholic.
In the majority of these countries, Catholicism is still the only christian faith practiced. In China, they are being persecuted for not succumbing to the "official" (government organized) Catholic Church.