Archbishop Charles Chaput led the 31st annual Commemorative Prayer Service in honor of Reverend Dr. Martin Luther King Jr. on Sunday, Jan. 19 at St. Malachy Church in North Philadelphia. The service began with a procession of leaders from other churches and faiths. Invited leaders from several Christian denominations read passages from Scripture and gave a reflection. The St. Malachy Choir led the congregation in rousing hymns during the service. (Video by Sarah Webb)