Erratic behavior is something of a brand for Kanye West, but his disclosure that he lives with bipolar disorder also necessitates that we think about his behavior through a mental health lens. Mental health advocate Bassey Ikpi joins us. Also, David Lammy is one of the British Parliament’s most prominent and successful campaigners for social justice. In 2007, he started a quest to explore his own African roots that resulted in his book “Tribes: How Our Need to Belong Can Make or Break Society.” Host Jeremy Hobson speaks with Lammy.