Hockey players and fans are known for fierce competitiveness and intense trash talk. But the rhetoric surrounding a state ice hockey championship game between Connecticut high schools devolved last month into antisemitism. Now, students at a Catholic high school in Fairfield, about an hour from New York City, have been disciplined in connection to anti-Jewish social media posts directed at members of their rival hockey team. The Fairfield College Preparatory School Jesuits played the New Canaan High School Rams on March 23, with a few thousand fans from both communities packed into an arena at Quinnipiac University, in Hamden, Conn....