PBS - Iconic America: The Gadsden FlagDavid Rubenstein explores America’s 400-year history through a close examination of iconic national symbols such as the Hollywood Sign, Fenway Park, American cowboys and the Statue of Liberty: indelible artifacts, places, and archetypes. In this episode, viewers discover how the “Don’t Tread on Me” flag, once a potent symbol of independence, has been co-opted over its long history.