A champion of MSAC principals?

Patrick's enslavement as an adolescent had to have been a critical factor in the development of his unique attitude toward the Irish. Even in captivity, he must have come to know them as human, hence, deserving of the gospel. This set the stage for his call to convert them.
As a result of his enslavement, Cahill, whose particular interest is the "hinges of history," says, "Patrick grew into a man that he truly would not otherwise have become. So you would have to say that Patrick's kidnapping was a great grace, not just for the people of Ireland, but for all of Western history."
Had he never been kidnapped, it seems quite likely that it would have been decades, probably centuries, before Ireland was converted. It certainly would not have been in a position to "save civilization," as Cahill so dramatically puts it in his book, when the Roman Empire crumbled and literacy was lost—lost, that is, by all but the Irish monasteries planted by Patrick and his successors.
Not surprisingly, his own experience in captivity left Patrick with a virulent hatred of the institution of slavery, and he would later become the first human being in the history of the world to speak out unequivocally against it.
"The papacy did not condemn slavery as immoral until the end of the 19th century," Cahill says, "but here is Patrick in the fifth century seeing it for what it is. I think that shows enormous insight and courage and a tremendous 'fellow feeling'—the ability to suffer with other people, and to understand what other people's suffering is like."
In fact, although he is renowned as the patron saint of the country and the people he evangelized, a better advocate than Patrick cannot be found for anyone disadvantaged or living on the fringes of society.
"He really is one of the great saints of the downtrodden and excluded—people that no one else wants anything to do with," Cahill says.
Women find a great advocate in Patrick