Justice Scalia is Scared of Genitals, OR Sexnegativity and the Law
So, you may not know this, but speech in America isn't completely free. You've probably heard of the "fire in a crowded movie theater" exception. However, unless you've gone to law school, you probably don't have much of an idea what is protected, and what isn't. Here's a quick quiz. Some of these things are protected speech, and some are not:
Cross burning (for explicitly racist purposes)
Cursing in public
Cursing at the Supreme Court
Advocating violent overthrow of the government
Depictions of animal cruelty
If you guessed "all of those are protected," you would be WRONG! All of them are protected... except for pornography. According to our Supreme Court, certain categories of speech are "of such slight social value as a step to truth that any benefit that may be derived from them is clearly outweighed by the social interest in order and morality." These categories are generally limited to "fighting words" and obscenity.
Obscenity is not what you're thinking, though. "Obscenity," according to our Supreme Court (and most recently by Justice Scalia), is limited to strictly sexual imagery. Not cursing. Not blood & gore. Not torture. Just sex.
The Court never really offers a rationale WHY sex has no value to a society; it just operates under the assumption that sexual imagery is less than worthless, and can be actively harmful. Look back at the list at the top of the post. The Court has held, at one time or another, that each one of those examples has enough value to our society to be worthy of protection. But not sex. When it comes to sex, it's just too dangerous.
I don't know what happened to make SCOTUS so afraid of sex, but let's hope the next generation approaches the issue with a little more sanity.