The last time I heard spontaneous singing in Union Square was in the days after September 11, 2001 — an experience I wrote about here. The crowd on Tuesday night consisted largely of college students and people in their twenties; some were children when 9/11 happened. I doubt that many members of this exuberant throng were thinking about what happened in this city seven years ago, but, for various reasons, I certainly was. The young man in the foreground is holding up a rush edition of the Daily News: President Obama.
A quick search of YouTube reveals that young crowds across the country broke into the national anthem in the early morning hours. You can find videos for the East Village, Times Square, Berkeley, Portland OR, Amherst, Ann Arbor, Seattle, Madison WI, and Harvard Yard (with band), among others. Two obvious conclusions: 1) contra Palin, the entire country is "pro America"; 2) increased support for music education would be nice.
One more musical angle: Bob Dylan announced the outcome of the election by playing "Blowin' in the Wind."