According to Dignitatis Humanis everyone has a fundamental right to freedom of religion. Does this mean that governments have to give up a preferential treatment to the Catholic Faith? If a country wanted to make Catholicism the State Religion would DH forbid that state from doing that? The Catholic Church is still the One True Church of Christ so governments should objectively be Catholic States, right?
q1. no, no, and no (times 1000000000)
q2. yes, if that means forcing people to convert to Catholicism. But I see no reason a government wouldn’t be able to say, “This is a Catholic country,” or whatever, and have public prayers by priests in governmental contexts, and prevent non-Catholic
official prayers in the same settings, etc. But if some Baptists want to go pray together at a Congressional meeting or something then the government would not be morally permitted to prevent them. Also, a government may certainly (and should) favor Catholicism and prevent non-Catholics (and Catholics for that matter…) from publicly protesting Catholicism, spreading literature/media against Catholic teaching, etc. This means that, while Episcopalians must be allowed to teach their faith in their churches, they have no right to go passing pamphlets around on main street saying contraception is ok, etc. Just for example.
q3. yes, in a manner of speaking. What
exactly this looks like will obviously vary, but in general governments are bound to respect, protect and favor Catholicism (without preventing free exercise of non-Catholic religions/non-Catholic Christian faiths). So while a government may give money to a Catholic organization and favor it, the government may not go raze the local mosque.
Remember: Vatican II leaves the traditional teaching, which means “all that stuff we didn’t talk about because it’s already established” (my words), untouched.