<p>It’s the 250th anniversary of America’s independence, and so far planned celebrations range from a UFC fight at the White House to a concert series featuring 90s rapper Vanilla Ice. But with musical acts dropping out citing polarization, tension over the ongoing Iran war and sky-high gas prices, Washington correspondents Katie Simpson, Paul Hunter and Willy Lowry ask: How do you have a birthday party if no one’s in the mood to celebrate?</p>