White House Photo: Giuliani gives the Cheneys a tour of Ground Zero.

ABC News:

Families of September 11 victims and emergency responders raised alarms on Wednesday that former New York mayor and presidential candidate Rudy Giuliani might politicize the sixth anniversary memorial of the attacks....

"Families and first responders are outraged and call for this speaking invitation to be rescinded and insist that politics be kept out of the 9/11 anniversary ceremony," said a statement by four September 11 groups.

...Giuliani senior adviser Tony Carbonetti said the candidate would attend out of respect for the victims, not politics.

"If you know Rudy Giuliani, he'd be down there paying his respects whether he was invited or not," Carbonetti said in a statement. "To say he's politicizing it -- he never would do anything like that."