By RONALYN V. OLEA Bulatlat.com MANILA – A 61-year old peasant activist was shot dead by two men on board a motorcycle, March 9 in San Roque village, San Mateo, Isabela, human rights group Karapatan said. Bonifacio Labasan, an active member of Danggayan Dagiti Mannalon iti Cagayan Valley (Dagami)-Isabela chapter, rode his motorcycle at around…