Posted on September 23, 2015 by Michael M. Grynbaum in The New York Times The New York Times, By Michael M. Grynbaum Mayor Bill de Blasio believes he has found the perfect messenger to advance his administration’s cause: the head of the Roman Catholic Church. As he prepares to welcome Pope Francis to New York City, the mayor is determined to harness the influence and celebrity of a religious leader whose populism, he believes, has much in common with his own goals of combating inequality and injustice.