It didn't.....there is no corrupt ecclesiastical hierarchy at all....there are some few corrupt members in the hierarchy but you can't condemn all for the sins of a few. There are just as many, or more protestant clergy involved in scandal, but because the protestant parishes are largely independent of one another, there isn't the scandal involved....The Catholics, on the other hand, are all connected through their diocesan association.
You must not be reading all the daily posts from one of your fellow Roman Catholics or you're head is in the sand.