Protecting migrants and honoring the humanity of those who died on the perilous trail is a kind of religion in southern Arizona where spiritual leaders four decades ago founded the Sanctuary Movement, a campaign to shelter Central Americans fleeing civil war, and scores of volunteers carry on their legacy today. Faith-based groups working in migrant activism run the gamut from the Tucson Samaritans, which leaves lifesaving caches of water, food and other provisions in the remote wilderness, to Catholic Community Services of Southern Arizona, which operates a shelter, to Methodists providing asylum-seeking families with legal aid and a place to stay, to name a few.