The United States constitution guarantees a number of rights to U.S. citizens. One of the most famous is the right to free speech. But what if people say or do horrible things? The Supreme Court struggled with this idea in 1989. The case related to a man named Gregory Lee Johnson. A few years earlier, he strongly objected to the policies of then-President Ronald Reagan. So, at a political meeting in Texas, Johnson burned the American flag. Police arrested him. Johnson appealed, saying that burning the flag was his way of expressing his political beliefs, exactly the kind of speech the writers of the U.S. Constitution aimed to protect. Opponents disagreed. They pointed out that the American flag was special, and they did not think burning it was speech. They warned that such an act could move people to violence. But a majority of the Court's justices agreed with Johnson. They said even if the public strongly dislikes an idea, people still have a right to express it.