The killing of labor leader Samuel Bandilla last Oct. 15 places at 20 the number of militant leaders slain in Eastern Visayas under the Macapagal-Arroyo administration. By MAUREEN JAPZON Bulatlat.com TACLOBAN CITY – It was 10 p.m. last Oct. 15 when Samuel “Sammy” Bandilla was felled by assassins’ bullets in the vicinity of Barangay 65,…