I saw a photo today of a UPS carrier walking on the street that did not seem bothered by Twin Towers burning behind him. Is it genuine?
WNYC's On the Media published a story about the photo.
The author is Melanie Einzig, and you can see it in her "USA" gallery on her photography website: http://www.witnessx.com/street/usa/
This shows that the author presents the photo as genuine, and that the claim passed On the Media's editorial process. On the Media has a reputation for accuracy and fact-checking, having previously won a Peabody Award, and other awards for investigative reporting, press criticism, and media criticism.
That exhibition self-described:
Positive View will present the very best in contemporary photography from across the globe and this exhibition will be no exception