[Polybius]

"The traditional majority"opinion is that of enemies of the Catholic Church. Could that not make it suspect?......RobbyS

I'm not aware of that many "enemies of the Catholic Church".....gitmo

Anti-Catholicism was a dominant theme in English and American popular history since the days of Henry VIII. That anti-Catholicism persisted until well into the 20th Century.

If you do not know know how English popular history and then American popular history portrayed Catholicism in the 16th, 17th, 18th, 19th and early 20th Centuries, then you need to read a little bit more of it.

18th Century English Children's Textbook

"Religious Freedom is Guaranteed" by Thomas Nast

“The American River Ganges,” Harper’s Weekly (30 September 1871) by Thomas Nast

[Logophile]

Note that Thomas Nast depicted both the "Roman Church" and the "Mormon Church" as foreign reptiles. (Why he would consider the Mormon Church as foreign is not clear to me.)

You are correct that anti-Catholicism has persisted well into the 20th Century. I would go a step further and say that anti-Catholic bigotry is alive and well in the 21st Century.