REUTERS BACKSTORY-Revealing Duterte's war with data, cameras and shoe leather

I met her with Reuters colleague Manny Mogato in May 2016 in a slum in Davao City, just after its long-time mayor, Rodrigo Duterte - also known as "The Punisher" - was elected president of the Philippines. Four of Alia's sons were killed in Davao in a brutal anti-drug campaign that Duterte had vowed to take nationwide.