An Italian journalist has published a book asserting that Pope Francis, then simply Fr. Bergoglio, assisted "by conservative estimates...more than 100 people" in escaping arrest and probable death at the hands of Argentina's ruling military during the 1970s. More information here.

I'd seen scattered references to the future pope's involvement in these rescues, but it seemed like only hearsay. This looks more extensive.

One can see why a priest who had been in that position would be more sympathetic to liberation theology, and less concerned about its doctrinal problems, than someone looking at it strictly from the theological point of view.