By ZOFIA LEAL Bulatlat.com MANILA – Three local candidates in Ilocos Norte province received letters from anonymous sender last March 24 demonizing Makabayan party senatorial candidates Satur Ocampo and Liza Maza and progressive party list groups. The letter branded Ocampo as a “butcher and murderer” in the Southern Tagalog and Bicol regions for allegedly leading…