One of three liberals on a Supreme Court dominated by conservatives, Justice Ketanji Brown Jackson said she has found an outlet for the frustration that can result from being in the minority on the nation’s highest court: boxing. “I take boxing lessons,” Jackson said Wednesday in an interview with The Associated Press at the Supreme Court. There have been more than a few dissents for the first Black woman on the Supreme Court, including the end of affirmative action in college admissions and a grant of broad immunity from criminal prosecution to former presidents for their official actions while in office.