The Democratic National Committee headquarters is seen in Washington, Thursday, Nov. 16, 2023, the morning after U.S. Capitol Police and protesters clashed outside during a demonstration for a cease-fire in the war between Israel and Hamas. Scores of Democratic representatives and candidates, including House Minority Leader Hakeem Jeffries, were inside at the time. (AP Photo/J. Scott Applewhite) WASHINGTON – National Democrats this year have insisted the party is united and ready to rally around President Joe Biden heading into next year's election. But a protest outside the Democratic National Committee headquarters signals growing tension within the coalition that has propelled...