"The commencement speech, with reprimands for birth-control use and a recent food fight, sparked boos and walkouts: A University of St. Thomas honors graduate who scolded his fellow seniors at Saturday's commencement ceremony for being "selfish" apologized Monday for offending people during his politically charged speech. Ben Kessler, an academic All-America football player who plans to become a priest, chastised students for using birth control, criticized them for a recent food fight and upheld the St. Paul university's controversial policy against allowing unmarried faculty and staff members in romantic relationships to room together on school trips that involve students. "Then...