Back in the early 1970s the U.S. Supreme Court upheld the right of secondary students under the First Amendment to wear black armbands to school in protest of America's involvement in the Vietnam War. In 2008 at least some school administrators apparently believe that judicial decision does not apply to conservative students.
According to MyFoxColorado.com:
An 11-year-old in Aurora says his first amendment rights are being trampled after he was suspended for wearing a homemade shirt that reads "Obama is a terrorist's best friend."
The fifth grader at Aurora Frontier K-8 School wore it on a day when students were asked to wear red, white and blue to show their patriotism.
The free speech guarantee of the First Amendment shouldn't depend on whether the political message is liberal or conservative. I guess the 11-year-old is about to teach his school administrators some constitutional law in court.