Historian Jon Meacham joins Morning Joe to discuss the killing of conservative activist Charlie Kirk during an event he was hosting at Utah Valley University and why he says it's crucial for Americans to take a minute, take a deep breath and disagree with civility. Our next MSNBC Live event is on October 11th in New York City! Buy Tickets now: msnbc.com/live25 For more context and news coverage of the most important stories of our day click here: https://www.msnbc.com/ » Subscribe to MSNBC: