The widespread use of the slogan ¡No pasarán! originates from the 1916 Battle of Verdun in the First World War when French General Robert Nivelle urged his troops not to let the enemy pass. The simplified slogan of "they shall not pass" (which it literally means) appeared on French war propaganda posters, most notably by French artist Maurice Neumont in the last year of the war after the Allied victory at the Second Battle of the Marne. The phrase was then used during the Spanish Civil War, at the siege of Madrid by Dolores Ibárruri Gómez, a member of the Communist Party of Spain, in her famous speech on 18 July 1936. Latterly it was used by British anti-fascists during the October 1936 Battle of Cable Street, and is still used in this context in some political circles. In the 1980s, the phrase was a theme in the civil wars in Central America, particularly in Nicaragua. This t-shirt (or a version of it)  was famously worn by the Russian feminist protest and performance artist group Pussy Riot.