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.

The Peace and Freedom Party (PFP) is a left-wing political party with ballot status in California. Its first candidates appeared on the 1966 New York ballot. The Peace and Freedom Party of California was organized in early 1967, gathering over 103,000 registrants which qualified its ballot status in January 1968 under the California Secretary of State Report of Registration.