ARAKAN, PHILIPPINES OCTOBER 17: Priests are seen at a mass for the remains of Italian Catholic priest Rev. Fausto Tentorio inside a Catholic Church October 17, 2011 in the township of Arakan North Cotabato in the southern Philippines. Tentorio, who hails from Santa Maria Hoe, Italy spent almost 30 years working in Mindanao, was shot several times while at his car in the church compound and was pronounced dead on arrival at hospital. (Getty Images)

And Mindanao will miss one of its staunch anti-mining activists.