Martin Luther King Jr. Day is the only federal holiday that is also designated a National Day of Service. Reverend King spent his life in service leading the campaign for social justice during the civil rights movement — and a new documentary looks at a new generation following in his footsteps. "Brief Tender Light" follows four Black African students from Tanzania, Zimbabwe, Rwanda and Nigeria, as they embark on their education at MIT. They pledge to return to their home countries after graduation and become agents of change, but their years abroad challenge them in unexpected ways. Under the Radar sits down with the director and a student featured in "Brief Tender Light" as the nation marks Martin Luther King Jr.'s 95th birthday. GUESTS Arthur Musah, director and producer of "Brief Tender Light" Philip Abel Adama, CTO and co-founder of Cleva Banking and a student featured in Brief Tender Light