(ANSA) - ROME, AUG 24 - Sigrido Ranucci, the left-leaning Rai investigative journalist facing possible suspension over a bomb attack staged by his friend and former Berlusconi extortion convict Walter Lavitola, said Monday he was the victim of a character assassination by the conservative press that was almost unprecedented in the world. Government politicians and conservative journalists have called for state broadcaster Rai to suspend Ranucci from Report, a hard-hitting programme whose expo...