An animal rights group and six of its members were convicted of terrorism and Internet stalking yesterday by a federal jury that found them guilty of using their Web site to incite attacks on those who did business with or worked for a British company that runs an animal testing laboratory in New Jersey. The case was the first test of the Animal Enterprise Terror Act, enacted in 1992 to curb the most aggressive tactics used by activists. The verdict, which came after 14 hours of deliberation, was called an insidious threat to free speech by some activists, but was...