PRESIDENT Rodrigo Duterte invoked presidential immunity when he threatened to kill criminals and drug addicts during his Aug. 5 speech before troops in Capiz. “’Pag ayaw magpa-areglo ng kaso, patayin. Parang lahat na. Salvage dito, salvage doon. Because when I became mayor, I said, “If you’re a criminal, if you’re a drug addict, if you