For a quarter century the grassroots interfaith movement has been best known for developing interfaith dialogue and new ‘bridge-building’ relationships. From the Parliament of the World’s Religions massive gatherings – to thousands of interfaith councils globally – to the 700 United Religion Initiative Cooperation Circles in 85 countries, grassroots interfaith leadership has been finding its voice in multiple arenas. Not so much in the public eye are thousands of interfaith organizations less concerned about being known than with engendering collaborative social justice activities, starting with meeting the needs of the hungry and homeless. Today many ‘cause’ campaigns, like those addressing climate change, have taken an interfaith posture for practical, collaborative purposes. Others, though, like the Interfaith Coalition for Immigrant Rights (ICIR), for years have used interfaith collaboration to fuel hands-on social justice ministry and activism. In a day when foundations are calling for ‘measurable results’ from their giving, and when ‘connect and collaborate’ are interfaith buzzwords, there is much to learn from groups like ICIR. Ed.