Supreme Court Chief Justice John G. Roberts Jr. on Tuesday warned that judges nationwide are under increasing threat from violence, intimidation, disinformation and officials threatening to defy lawful court decisions. Roberts said that robust criticism of judicial rulings is part of American civic life, but that some recent attacks had gone too far in threatening to undermine the independence necessary for judges to rule impartially. “Violence, intimidation, and defiance directed at judges because of their work undermine our Republic, and are wholly unacceptable,” Roberts wrote in his annual report on the state of the nation’s judiciary. The justice’s message follows...