A Supreme Court case about the free-speech rights of high school students, to be argued on Monday, has opened an unexpected fissure between the Bush administration and its usual allies on the religious right.

As a result, an appeal that asks the justices to decide whether school officials can squelch or punish student advocacy of illegal drugs has taken on an added dimension as a window on an active front in the culture wars, one that has escaped the notice of most people outside the fray.

WASHINGTON (AP) - The Supreme Court tightened limits on student speech Monday, ruling against a high school student and his 14-foot-long "Bong Hits 4 Jesus" banner.

Schools may prohibit student expression that can be interpreted as advocating drug use, Chief Justice John Roberts wrote for the court in a 5-4 ruling.

Joseph Frederick unfurled his homemade sign on a winter morning in as the Olympic torch made its way through Juneau, Alaska, en route to the Winter Olympics in Salt Lake City.

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Exceptions established by the courts to the First Amendment protections include the following:
Defamation | Causing panic | Fighting words | Incitement to crime | Sedition | Obscenity

Schenck was later overturned by Brandenburg v. Ohio, which ruled that speech could only be banned when it was directed to and likely to incite imminent lawless action (e.g. a riot), the test which remains until this day.
...
Despite Schenck being overturned, the phrase "shouting fire in a crowded theater" has since come to be known as synonymous with an action that the speaker believes goes beyond the rights guaranteed by free speech, reckless or malicious speech, or an action whose outcomes are blatantly obvious.

At a school-sanctioned and school-supervised event, petitioner Morse,
the high school principal, saw students unfurl a banner stating
“BONG HiTS 4 JESUS,” which she regarded as promoting illegal
drug use. Consistent with established school policy prohibiting such
messages at school events,
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