SAN FRANCISCO—Several hundred people rallied outside the federal courthouse here November 1 to oppose the new Arizona anti-immigrant law, which went into effect July 29. Inside, the Ninth U.S. Circuit Court of Appeals was hearing an appeal by the state of Arizona of a federal court ruling that blocked implementation of parts of the law, including the section requiring police to determine a person’s immigration status if there is “reasonable suspicion” that the person may be undocumented. A few dozen supporters of Arizona’s anti-immigrant statute attempted to disrupt the protest but were outnumbered.

—ERIC SIMPSON