For Davao City Mayor Rodrigo Duterte, a 15-year-old child is old enough to discern what is right from wrong and, as such, should be held accountable for his actions. BY CHERYLL D. FIEL Davao Today Posted by Bulatlat Vol. VII, No. 35, October 7-13, 2007 DAVAO CITY — For Mayor Rodrigo Duterte, a 15-year-old child…