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- Soviet Union--Foreign relations--United States12
- United States--Foreign relations--Soviet Union11
- Cold War10
- United Nations5
- National Association for the Advancement of Colored People4
- Uncle Sam (Nickname)3
- Africa2
- African American civil rights workers--Pennsylvania--Pittsburgh2
- African Americans--Civil rights--Pennsylvania--Pittsburgh2
- Agriculture2
- Arrest2
- Assault and battery2
- Astronautics--International cooperation2
- Bail2
- Bombings2
- Boycotts2
- Civil rights demonstrations2
- Civil rights movement2
- Civil rights movements--Pennsylvania--Pittsburgh2
- Civil rights workers--Pennsylvania--Pittsburgh2