MALACAÑANG on Tuesday slammed Vice President Sara Duterte after she blamed President Ferdinand Marcos Jr. for the recent school shooting in which three students died in South Cotabato.In a press briefing, Palace Press Officer Claire Castro rejected Duterte’s accusation that Marcos failed the victims of the Sept. 18 shooting at Banga National High School in South Cotabato, saying the administration is actively pursuing concrete, multi-agency solu…