The Catholic Church IS diversity. It's an immense presence in Africa and Latin America. India has large numbers of Catholics. And of course, Catholics in the Middle East are being murdered and driven out by Muslim extremists.
As far as an urban ministry : locally, the Cornerstone Schools [[ founded by Cardinal Maida), Focus Hope, Christo Rey, CYO sports programs, Mercy Health programs, St. John's Hospital, Marygrove College, UDMercy, Capuchin Soup Kitchen, St. Leo's soup kitchen, Dominican Literacy Center, refugee settlement programs- this is only a partial list of Catholic urban ministries, both institutional and personal.