Joe discussed political violence and the attack on Speaker Nancy Pelosi's husband Paul, online extremism and Elon Musk's purchase of Twitter. Guests: Leon Panetta, former Secretary of Defense, former CIA Director and Chairman of the Panetta Institute, Tim Roemer, Former Indiana Congressman and 9/11 Commission Member, Katherine Keneally, Senior Research Manager at the Institute for Strategic Dialogue.Plus our politics panel, Bloomberg Politics Contributors Jeanne Sheehan Zaino & Rick Davis See omnystudio.com/listener for privacy information.