Propaganda of the deed (or propaganda by the deed, from the French propagande par le fait) is specific political action meant to be exemplary to others and serve as a catalyst for revolution.
It is primarily associated with acts of violence perpetrated by proponents of insurrectionary anarchism in the late 19th and early 20th century, including bombings and assassinations aimed at the ruling class, but also had non-violent applications
.. These “deeds” were to ignite the “spirit of revolt” in the people by demonstrating the state was not omnipotent and by offering hope to the downtrodden, and also to expand support for anarchist movements as the state grew more repressive in its response.
.. Some anarchists, such as Johann Most, advocated publicizing violent acts of retaliation against counter-revolutionaries because “we preach not only action in and for itself, but also action as propaganda.” It was not advocacy for mass murder, but a call for targeted killings of the representatives of capitalism and government at a time when such action might garner sympathy from the population, such as during periods of government repression or labor conflicts