That they're marketed, not all that successfully, as palestinian solidarity and anti-war (Iraq) symbols is beyond question. Did Rachel Ray know that, who knows, but she doesn't strike me as politically aware, so my guess no. The guy at the ad agency who set up the shot, you bet. Similarly, remember the many incidents where corporations are embarassed because suddenly their websites or travel schedules or phone directories no longer list Israel, rather palestine. Same thing, and not an accident.
Do you know where she bought this scarf?