Feb 23:

In a show of anger, Hillary Clinton, who lost her lead in the presidential race, yelled "Shame on you, Obama," on television. She was angry that Obama was sending out old newsletters that were published with lies about her healthcare plan. Obama then went on tv later in the day and denied fault. The logo is a picture of her when she yelled the phrase, which is prninted underneath her. It's more of a bumper sticker or a pin than anything, but arguably, it could be a logo for anything under the sun, such as "Shame on you, Obama Frosted Flakes!"

http://www.washingtonpost.com/wp-dyn/content/article/2008/02/24/AR2008022400285.html