his bunga bunga parties are infam use. earlier this year he was convicted of paying an underage girl for sex. there's the tax fraud. in august italy's highest court upheld a prison sentence which silvio berlusconi may be able to serve under house arrest. it was the eurozone debt crisis that contributed to his down fall. the economy was pushed to the brink, silvio berlusconi lost the parliamentary majority and he was forced from office in 2011. >> as long as he has voters ready to vote for him and the party, i would say he's a power in italian politics, not as powerful as he used to be. silvio berlusconi is a public figure with many enemies, few go as far as the man that threw something at him. many of his allies decided they can no longer support him. >> live in rome we join a professor of italian politics at the american university of roam. we'll talk about the reasons why this is happening in a moment. i'd like your thoughts on why a man who is a convicted fraudster, a fill anderer, a figure of fun in many circles - what