Solidarity is action on behalf of the one human family, calling us to help overcome the divisions in our world. Solidarity binds the rich to the poor. It makes the free zealous for the cause of the oppressed. It drives the comfortable and secure to take risks for the victims of tyranny and war. It calls those who are strong to care for those who are weak and vulnerable across the spectrum of human life. It opens homes and hearts to those in flight from terror and to migrants whose daily toil supports affluent lifestyles. Called to Global Solidarity, U.S Catholic Bishops, 1997