History Of The “Clenched Fist”

Lincoln Cushing and Docs Populi document the background to the visual of the clenched fist:

A persistent symbol of resistance and unity, the clenched fist (or raised fist) is part of the broader genre of “hand” symbols that include the peace “V,” the forward-thrust-fist, and the clasped hands. The clenched fist usually appears in full frontal display showing all fingers and is occasionally integrated with other images such as a peace symbol or tool.

A brief history of the “clenched fist” image