Over the past few months members of the pope's commission for child protection -- handpicked by Francis to help root out sex abuse in the Catholic Church -- have publicly attacked a cardinal and a bishop.
The cardinal in question is the Vatican's finance chief George Pell, who was accused by commissioner Peter Saunders of being an "almost sociopathic" man who covered up abuse and tried to buy the silence of at least one victim.
Despite the anger among red hats in the gilded corridors of Saint Peter's, Saunders -- a British child abuse victim -- stood his ground and has not apologised.
The anti-paedophilia body has strong ties to survivor groups who are highly critical of the Vatican, and its members readily draw attention to the Church's flaws, even if it embarrasses the very man who appointed them.
Four of the commission members took their concerns to the body's president, Boston Cardinal Sean O'Malley, saying he had agreed to pass them on to the pope.
They stressed the need for bishops who "are committed to and have an understanding of child protection" -- but the Vatican insisted in this case it had done its background checks on Barros and not found him wanting.
But it also called on cardinals and bishops to help crack down on abuse, saying "those in a position of authority must act quickly, transparently, with the clear intent to see justice take its course."
The very fact that some experts feel they can call the Vatican's top brass to order shows the growing role of independent experts in everything from the state's finances and media operation to fighting child sex abuse, religious watchers say.
