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.
It is primarily associated with acts of left-wing resistance of the late 19th and early 20th century but also had non-violent applications.
One of the first individuals to conceptualise propaganda by the deed was the Italian revolutionary Carlo Pisacane (1818–57), who wrote in his "Political Testament" (1857) that "ideas spring from deeds and not the other way around." Mikhail Bakunin (1814–1876), in his "Letters to a Frenchman on the Present Crisis" (1870) stated that "we must spread our principles, not with words but with deeds, for this is the most popular, the most potent, and the most irresistible form of propaganda." The concept, in a broader setting, has a rich heritage, as the words of Francis of Assisi reveal: "Let them show their love by the works they do for each other, according as the Apostle says: 'let us not love in word or in tongue, but in deed and in truth.'"
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." Most was an early influence on American anarchists Emma Goldman and Alexander Berkman. Berkman attempted propaganda by the deed when he tried in 1892 to kill industrialist Henry Clay Frick following the deaths by shooting of several striking workers.
By the 1880s, the slogan "propaganda of the deed" had begun to be used both within and outside of the anarchist movement to refer to individual bombings, regicides and tyrannicides. In 1886, French anarchist Clément Duval achieved a form of propaganda of the deed, stealing 15,000 francs from the mansion of a Parisian socialite, before accidentally setting the house on fire. Caught two weeks later, he was dragged from the court crying "Long live anarchy!", and condemned to death. Duval's sentence was later commuted to hard labor on Devil's Island, French Guiana. In the anarchist paper Révolte, Duval famously declared that, "Theft exists only through the exploitation of man by man... when Society refuses you the right to exist, you must take it... the policeman arrested me in the name of the Law, I struck him in the name of Liberty".