I've been meaning to respond to this sooner, but on 8/16 Bill O'Reilly said:

"Two days ago, reporter Anne Kornblut wrote in The New York Times, "The FOX News television host Bill O'Reilly has called Cindy Sheehan treasonous." Of course, that's false. And Moday, The New York Times issued a correction admitting I did not put that label on Ms. Sheehan...

Here's what he said on 8/10:

" I think Mrs. Sheehan bears some responsibility for this [publicity] and also for the responsibility for the other American families who lost sons and daughters in Iraq who feel this kind of behavior borders on treasonous." This page has the video

He plays the semantics game here. It's a common trick used by smear merchants. Bill did not name one source for the "treasonous" allegations, but he made sure the word "treasonous" ended up in the discussion so that he could paint her that way. I will contact Ann Kornblut about O'Reilly's trick though she should have been able to stand up for herself.

As Think Progress notes: "Wednesday night, Fox News talking head Bill O’Reilly demanded retractions from newspapers which reported he’d implied American war veteran mother Cindy Sheehan was acting in a treasonous manner, indignantly saying: That is absolutely false. I never said or implied Ms. Sheehan was treasonous."...read on

Bill did imply it by using other grieving families to make his inference. That Bill sure is a cowardly fellow.