Biden says ‘democracy must be preserved,' passes torch to Harris

What to Know

• The Democratic National Convention, during which Vice President Kamala Harris is set to officially accept the party's presidential nomination, kicked off Monday night with a surprise appearance by Harris.
• The first night highlighted President Joe Biden's "leadership and legacy," and was capped off by a speech by the president.
• Former Secretary of State and 2016 presidential nominee Hillary Clinton made a forceful case for Harris.
• Multiple people were arrested by Chicago police on Monday evening when a group of protesters breached a security barrier near the United Center.
• Former President Donald Trump and his running mate Sen. JD Vance were holding counterprogramming events Monday in Pennsylvania.