How some view Obama (listen closely).....Disturbing!!!

Marc Ambinder notes that the shouter advances McCain's Bill Ayers and Jeremiah Wright attacks, while Jonathan Martin suggested the campaign would need a third party to do it:

Judging by McCain's slightly startled reaction, he clearly didn't anticipate that reaction, and McCain's in no way responsible for the utterances of anybody in his audience. But he must have some idea of how deeply this fear/outsider/other meme has spread. A tripartite strategy isn't needed.
The Washington Post reported on a similar moment at a Palin rally on Monday:

"Now it turns out, one of his earliest supporters is a man named Bill Ayers," Palin said.

"Boooo!" said the crowd.

"And, according to the New York Times, he was a domestic terrorist and part of a group that, quote, 'launched a campaign of bombings that would target the Pentagon and our U.S. Capitol,'" she continued.

"Boooo!" the crowd repeated.

"Kill him!" proposed one man in the audience.