THE MOST DIFFICULT DECISION a governor ever has to make is whether to grant clemency to a condemned convict. Gov. Arnold Schwarzenegger made such a decision on Monday. He made the right call when he refused to spare the life of Stanley "Tookie" Williams. We do not say that blithely. Frankly, we cannot imagine having to make such a call. But we also cannot conceive of telling the family members of the dead that Williams had somehow redeemed himself by writing some children's books. Williams' case became national news because while in prison he has worked to steer children away...