As well as those bishops and clergy there are those who keep picking at the 'child abuse sore' making sure that it won't heal. They think that by keeping the Church as a global pariah they will be able to bring about the protestantisation of the Catholic Church.
Most reasonable Catholics accept that the scandal is now, for all intents and purposes over. Of course it will never be eradicated completely, given human nature but it will never reoccur on the post-Vatican II scale.