Legal and Political magazines
- Petition Against the Annexation of Hawaii
- Pie in the Eye
- Politics, Policy, and Political Dissent
- Polk, James K
- Praise Mingles with Anger as Hundreds Turn Out for Rally to Support Troops
- Presbyterian Founder of Gray Panthers Documented in "Maggie Growls"
- Proclamation 4483
- Promoting the Maintenance of International Peace and Security in Southeast Asia
- Protesters and Protest Rights
- Protesters Smash the Window of a McDonald's
- Protesting U.S.-Mexico Border Policy
- Provisional Irish Republican Army
- Real Irish Republican Army (RIRA)
- Red Army Faction
- Red Brigades
- Relatives of the "Disappeared" Protest
- Republic of Texas
- Rescue America
- Resistance Records
- Resolution to Protest the Eroding of Civil Liberties under the USA PATRIOT Act (Public Law 107-56) and Related Federal Orders Since 9/11/01