Museum of the African Diaspora

Above, what Edward Rothstein, writing in yesterday's New York Times, called "the single most telling exhibit at the museum."

From outside the building, as seen in the photo, it's the face of an African child (photographed by Chester Higgins Jr.) which, upon close inspection inside the museum, turns out to be a mosaic of over 2,000 smaller photographs.

See it for yourself if you visit San Francisco, where the museum is located (685 Mission Street [at Third]; 415-358-7200; www.moadsf.org).

We are all Africans.