Hosted by Jane Pauley. In our cover story, Ted Koppel examines the controversy over qualified immunity, which shields police officers from civil lawsuits in many cases. Plus: Pauley profiles singer-songwriter Mariah Carey; Susan Spencer talks with a sculptor memorializing a groundbreaking moment in sports; John Dickerson looks at what presidential debates may reveal about the candidates; Luke Burbank interviews comic actor Jim Belushi, who has a found a new role as a cannabis farmer; Nancy Giles finds out why an old-time craze, roller skating, is on a roll; and Mo Rocca witnesses some of the contraptions built by families in lockdown for this year's Rube Goldberg Machine Contest.