Here's what you may have missed this week on 60 Minutes.Oath Keepers: How a militia group mobilized in plain sight for the assault on the CapitolRacism's corrosive impact on the health of Black AmericansViola Davis' journey to Triple Crown-winning actressThe impact of racism on mental healthViola Davis: Chadwick Boseman gave "extraordinary" final performanceViola Davis on knowing struggleAn update on the Greenland Ice Shelf