He's a pedophile. Stop defending him. While he was taking naked pictures of a thirteen year-old model, he got her drunk with champagne and quaaludes, and then he raped her in every orifice. Around that time he also had a romantic relationship with fifteen year-old Nastassja Kinski. Polanski was in his forties during this time.
Stop justifying it. The excellence of Chinatown or the Pianist or Rosemary's Baby doesn't change anything. His pregnant wife being murdered by the Manson family doesn't excuse it either.
On a related note: Mumia did it. He's a murderer not a damn martyr. Kindly stop trying to free him.