A pipeline company’s lawsuit against the environmental group could chill free speech, experts said. First Amendment issues are likely to figure prominently in an appeal.

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The book on which she collaborated with two fellow feminists drew global attention to the repression of women under their country’s dictatorship.

Attacked by two justices, lower-court judges and litigants, the 1964 ruling in New York Times v. Sullivan keeps getting cited approvingly in the Supreme Court’s decisions.