Who is Nora and how is Lis related to the Rich family?

Erin Bartels begins this story with a meeting between a reporter, Elizabeth "Liz" Balsam, and the Rich family. Liz covers corruption in Detroit and Mr. Rich comes to her with a story about the '67 riots. It's not just any story but a story of her family and the the Rich family's connection to those riots. What happened and what do the photos show?