Several A-listers were among the thousands who joined a live-streamed event Thursday, hosted by Oprah Winfrey, that united the many grassroots political groups supporting Kamala Harris’ presidential campaign.

Oprah Winfrey and other A-list celebrities gave Democratic presidential nominee Kamala Harris a boost in the battleground state of Michigan

MSNBC’s Ari Melber reports on Kamala Harris’ star-studded campaign event with Oprah Winfrey in Michigan. (Check out The Beat's playlist: <a href=" Connect with Ari Melber: <a href="