richmond va. virginia governor veto bill monday would make state first country require parent notify students assign read label sexually explicit mother objection toni morrison novel beloved teach son classroom help spur legislation would give parent control classroom materials requirement lack flexibility would require label sexually explicit apply artistic work base single scene without context governor terry mcauliffe democrat say statement bill pass republican-controlled legislature vote 77-21 house delegate 22-17 senate would enough override mcauliffe veto would require two-thirds vote chamber measure would make virginia first u.s. state mandate school notify parent teachers plan use label materials accord american library association office intellectual freedom mcauliffe say virginia board education study issue focus exist local policies potential state policies measure oppose number free speech group include american library association national coalition censorship novel morrison nobel laureate story runaway slave kill 2-year-old daughter save life slavery beloved pulitzer prize fiction 1988. american library association list ban challenge classics virginia house speaker william howell republican among bill sponsor say unaware mcauliffe veto reaction see veto message say say virginia governor veto bill label book 'sexually explicit school