Unidentified protesters carrying signs walk towards the book store where former President George W. Bush is holding a book signing in Dallas, Tuesday, Nov. 9, 2010. The pair left after the police asked them to leave the parking lot. (AP Photo/LM Otero)

Photo by: LM Otero

Unidentified protesters carrying signs walk towards the book store where former President George W. Bush is holding a book signing in Dallas, Tuesday, Nov. 9, 2010. The pair left after the police asked them to leave the parking lot. (AP Photo/LM Otero)