Complex sentence: Rodrigo Duterte also ordered the Philippine National Police to kill any of his children involved with the illegal drug trade, so that he can silence his critics by showing to them his children's corpses.
Split into simpler sentences: Rodrigo Duterte also ordered the Philippine National Police to kill any of his children caught being involved with the illegal drug trade. Duterte states that he will silence his critics by showing to them his children's corpses.