The first amendment is a restriction on Congress, and does not apply to the private Motion Picture Association that maintains the film rating system.
> why they can have speech abridged
I don't think that's true of federal law. There are cases, such as in school, where more restrictions are permitted to the school. But those restrictions are not based on age.
> There are cases, such as in school, where more restrictions are permitted to the school. But those restrictions are not based on age.
After 18 you can choose whether to be in school or not. Those restrictions are voluntary for adults but compulsory for minors (who do not get to choose whether they go to public school, private school, homeschool, or just pass the GED)
The first amendment is a restriction on Congress, and does not apply to the private Motion Picture Association that maintains the film rating system.
> why they can have speech abridged
I don't think that's true of federal law. There are cases, such as in school, where more restrictions are permitted to the school. But those restrictions are not based on age.