The concept of a common humanity sounds like a good idea, but making it happen is complicated amidst 21st-century-style disruption. Raimond Gaita is one of our most esteemed moral philosophers, and he’s on the case. Rai been writing and lecturing on the fragility of a common humanity, and questions if the very idea even works any more—legally, morally, and politically. What are the risks if it doesn’t?