The marchers lawyer appealed the jail sentence to federal court. In due course their appeal reached the Supreme Court. All nine justices agreed that the court order forbidding the march was unconstitutional. However, a majority also ruled that the contempt order was valid. The Supreme Court wanted to make the point perfectly clear.
Judges are above the law.
Judges are above the Constitution. In 1959, the U. S. Supreme Court heard an appeal of a murder conviction. A fellow named Vincent Spano had confessed to the police without a lawyer present. And it ordered that Spano be freed. That quote suggests an obvious question.