Freedom of religion, freedom of the speech, and freedom of the press regularly have restrictions placed on them, based on Congress' and the American people's perception on what is needed.
Freedom of religion? If you're a Muslim, you can't have four wives in the US. The Mormons had to ban polygamy for Utah to gain entrance as a state. 2.4% of people in the US practice a religion where life begins at birth, not conception.
Freedom of speech? Don't incite folks to perform illegal acts, even if you don't do them yourself. Incitement isn't covered under the First Amendment. Don't encourage someone to commit suicide, either.
Freedom of the press? Regularly restricted...if your press is printing child porn, the government will shut you down. Don't publish leaflets encouraging people to dodge the draft, either (Espionage act of 1917).
Now, many of these things are definitely *good*. But, again, the public ultimately has to accept the necessity of these limits.
So the precedent is certainly there to limit second amendment rights.
Ron Wanttaja