Anna Esther Svidersky (April 26, 1988 – April 20, 2006) was a teenager who lived in the U.S. city of Vancouver, Washington. She was murdered while working in a McDonald's restaurant, by David Barton Sullivan, a schizophrenic twice-convicted sex offender. News of her death quickly spread worldwide, initially through the Internet friends site MySpace, where she had a personal page, and then through other similar sites. The widespread expression of grief over Anna's death by strangers around the world was compared by The Guardian newspaper in Britain to that seen after Diana, Princess of Wales' death.