What is the fine-grained topic of the following text: As founders and directors of Mother of Mercy Messengers, an apostolate of the Marian Fathers of the Immaculate Conception, Dave and Joan Maroney have taken the message emanating from the National Shrine of The Divine Mercy in Stockbridge, Massachusetts to parishes, schools, and conferences across the United States and beyond since 1999. Only return the topic.
Mother of Mercy Messengers Apostolate Activities