It was one of the most courageous battles ever fought by American men and women not in uniform. It was led by moms ready to donate their breast milk to strangers and dads ready to drive someone else’s kids to school because the parents, terrified of ICE agents, were too afraid to go out outdoors. It was neighbors ready to hit A.T.M.s to help out neighborhood restaurants and businesses deciding not to open — thus forgoing their income — for fear that masked ICE agents might drag away their cooks or dishwashers or desk clerks.