For an outsider, basis what info is available in public domain this doesn't seem like a crusade against drugs but a clear cut case of human right violations. May even be a disguised opponent cleansing program.
Again even if you ignore the whole humanitarian or liberal point of view, fact remains that Duterte is on a killing spree, himself being the judge, jury and prosecution. 'With great power comes great responsibilty' and his obsession with power is a bad omen, a dictator is the last thing filipinos would want!!!