How India's caste system persists across the globe

When the earliest form of caste was created in ancient India, it had roots in religion. In the 21st century, it lives on as a secular institution that cuts across race, gender, sexuality and class. Suraj Yengde is one of the world's leading experts in the study of caste. He joins Host Marco Werman to discuss why caste is so tricky, and how it reproduces itself in Indian diaspora communities worldwide.