text:  Certainly what Lyndon Johnson did after John Kennedy's assassination, he was able to bring the Congress together to pass the civil rights bill in memoriam for John Kennedy. He was able to say that we have to fight extremism and come together, and he was a bipartisan leader for those first couple years. There are moments that can be used in a positive way, and I think we've just got to hope we did that before and we can do that again. That's presidential historian Doris Kearns Goodwin. Thank you so much for joining us, and thank you for your perspective.