As India suffers through a devastating surge in COVID-19 infections, the 4.2 million members of the Indian diaspora in the U.S. are stricken with panic, pain and grief. Many are volunteering to help. Special correspondent Fred de Sam Lazaro reports on the efforts of Indian American doctors to help mitigate the crisis in India. It's part of our "Agents for change" series. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders