Cindy Lee Sheehan is an American anti-war activist, whose son, U.S. Army Specialist Casey Sheehan, was killed by enemy action during the Iraq War. She attracted national and international media attention in August 2005 for her extended antiwar protest at a makeshift camp outside President George W. Bush's Texas ranch—a stand that drew both passionate support and criticism. Sheehan ran unsuccessfully for Congress in 2008. She was a vocal critic of President Barack Obama's foreign policy. Her memoir, Peace Mom: A Mother's Journey Through Heartache to Activism, was published in 2006. In an interview with The Daily Beast in 2017, Sheehan continued to hold her critical views towards George W. Bush, while also criticizing the militarism of Donald Trump.

Camp Casey was the name given to the encampment of anti-war protesters outside the Prairie Chapel Ranch in Crawford, Texas during US President George W. Bush's five-week summer vacation there in 2005, named after Iraq War casualty US Army Specialist Casey Sheehan.