Two of those who were recently killed in Central Luzon have had brushes before with Maj. Gen. Jovito Palparan, the man the victims’ relatives and friends claim as behind the killings. BY DABET CASTAÑEDA Bulatlat.com ANGELES CITY, Pampanga – The eldest son of slain Bayan Muna (BM) member Francisco Rivera, 34-year old Ricardo, was a…