What are some examples of legal precedents?
Lorillard [Tobacco Company] sued [the Attorney General of] Massachusetts on state regulation of outdoor advertising that would have prohibited ads within 1,000 feet of schools [Lorillard v. Reilly]. The Supreme Court said those regulations were a violation of the First Amendment. We think it is quite likely the court may look at the total package and see that it is designed with only one purpose: to prevent sales of tobacco products to anyone. The First Amendment says Congress shall make no law abridging the freedom of speech. And the Supreme Court makes clear there should be no distinction between products. There have been cases involving so-called “sin products,” contending that they should be restricted under the First Amendment. But the Court has ruled against them. William Rehnquist, as Chief Justice, wrote the decision that, in fact, there must be no distinction between categories or products because once you start putting restrictions on one product, you put precedence on others