Jim Hoft is asking the right question — why is it that a British paper is the main outlet paying attention to this?

Security Shock: Book Thrown at Obama After Philly Speech Nearly Hits His Head

The Daily Mail called it a “flying missile” and looked at the security implications:

It is expected that there will be fallout from the security breach as the Secret Service investigates how close the President came to danger.
The rally was clearly an eventful one – other images showed a naked man being led away in handcuffs by police.
It is not clear if the man was involved in the book-throwing incident – or why he was not wearing any clothes.

Security Shock: Book Thrown at Obama After Philly Speech Nearly Hits His Head

Hoft posted a video on Gateway Pundit.  Pay attention at the :23 mark:

CBS News has this version of the video — with some slo-mo and highlighting: