The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
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- Attempted Colour Revolutions (4 members)
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- Austro-Hungarian military personnel of World War I (1 member)
- Author: Vladimir Lenin (0 members)
- Autonomous regions in China (4 members)
- Ba'athist states (1 member)
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- Black left feminism (2 members)
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- Black people murdered by US police (2 members)
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