Justice Is Secret Service 'above the law'? Supreme Court hears protest case. (+video)

The Secret Service moved anti-Bush protesters behind pro-Bush protesters in 2004, citing a security concern. The plaintiffs charged discrimination in a case heard by the Supreme Court Wednesday.

Kevin Lamarque/Reuters

It is not often US Supreme Court justices have occasion to consider the logistics of being within grenade-tossing distance of the president of the United States.