THIS EPISODE: Joe Biden is calling students’ return to school amid the coronavirus pandemic a national emergency. Kamala Harris’ Chief of Staff Karine Jean-Pierre slams the Trump administration’s reopening methodology, as María Teresa Kumar hosts AM JOY on MSNBC. AND: Police brutality protests, the need for justice system reform, and the reactions of Attorney General William Barr are discussed by Sen. Cory Booker. NEXT: Beto O’Rourke discusses Texas potentially turning blue as millions of new voters have registered to vote, many through his organization Powered by People. FINALLY: Actor and director John Leguizamo discusses his new film ‘Critical Thinking,’ empowering young people of color to achieve, and the resiliency of New York City. All this and more in this Saturday edition of AM JOY on MSNBC.