Why are modern arms protected but not modern forms of speech and expression? (I trust that you will answer once you've spent some time working on your ConLaw skills.)
While we have always (since con) had the right to keep and bear arms, we have never had the right to to fire them indescriminantly into crowds.
While we have always (since con) had the right to freedom of speech. we have never had the right to scream "FIRE!" falsely into a crowded building.
The destructive use of any right is illegal.
Further. Heavy arms have always been illegal to the individual. I.E. The constitution does not protect anyones right to own a Bazooka, an operational tank, a scud missile, etc.
Communities have always had the right to limit what would be obscene within them. (That is in the same SCOTUS rulings that dumped the rain of porn us we "enjoy" today.) Most communities find it difficult to enforce, define, or prove what is agreed to be obscene within their community. However, if their is an anti-obsenity law passed it is enforceable and constitutional.
For example, you can be fined up to four hundred dollars per curse word anywhere in Texas for cursing in front of women or children. This law has been enforced and held up in court within the last 6 years.
If there are laws on the books that you don't like, you may want to get the ACLU to defend your right to ignore them. But you will still have to win in court.
What's more, unless it was filmed in Nevada. Hardcore porn pretty much is the filmed record of two (or more) prostitutes engaged a criminal act. I don't see how they get away with engaging in paid sex, anymore than engaging in paid assisted suicide. Just because it's on film doesn't make it legal. Even if it is "Art".
I always heard that sex was a weapon.