WARWICK, R.I. — The principal of Bishop Hendricken High School has retired after school officials became aware of a brief video that shows him using racist and anti-Semitic language.In an email that went out to Hendricken parents, and was obtained by The Journal, the school's president, John A. Jackson, said Principal Joseph Brennan Jr., who has had a 40-year career at the Catholic school, has retired."The video clip, which is under review, has no context and Mr.