After a while, it seemed so normal to recognize a few famous faces in the crowd, however, that my excitement began to dwindle.

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Video-as-data means easily matching the faces in the crowd in one way or another, with Facebook as the easy but not only choice.

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There are so many familiar faces in the crowd.

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In the opposite end are Muslim faces in the crowd of those rallying in support of democracy and the modern world as in Turkey and Lebanon, Indonesia and Iraq, or forced into silence as in Iran.

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Throughout the day we marched, passed out fliers, stickers, and mementos, and were greeted along the streets of New York by other women veterans lost in the crowd of smiling faces, searching for a glimpse of recognition that they too served in the military side-by-side with our brothers at arms.

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Can the same high-tech tools trained on potential terrorists--hidden cameras to pick faces out of the crowd, software to listen in on phone calls and e-mails--be turned against ordinary U.S. citizens?

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People are awful, of course -- somebody once observed that every civilization faces a barbarian invasion every generation in the form of its children -- and the Broadway and off-Broadway crowd is full of miscreants.

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