It doesn't matter who started. That matters is that must stop. Many poor people suffering, they can't feed the own families, they afraid to trust people because of the guns and they are ashamed for their country. 
The vigilantes still enjoy support from more than 80% of the population, and Duterte remains extremely popular. So I don't foresee the bloodshed ending anytime in the near future. By the time the voters realize that this tactic is wrong, tens of thousands of innocent lives will be lost. This is not going to end well for Duterte and his supporters.
It's going end very well for for Duterte, when he's hanging from a lamppost.
SIC SEMPER TYRANNIS MOTHERFUCKER.
