Abusers have often been abused themselves.

If a number of these priests came up through the ranks after being members of a Catholic congregation with a pedophile priest, they will abuse also.

I would hope the Catholic Church would put in place an "amnesty" for abusive priests to come forward and be defrocked with some dignity (which they only deserve if they confess up front rather than being caught), and to get those children (mostly boys) into counselling immediately. I haven't read about any pro-active measures, but I hope some are soon in place.