描述Trade unionists in the penitentiary of Cartagena.jpg
English: Photography of the Spanish trade unionists Julián Besteiro, Daniel Anguiano, Andrés Saborit and Francisco Largo Caballero in 1918, on the day of his release from the penitentiary of Cartagena (current Seamanship Instruction Barracks).
The four had been convicted by a court-martial to life imprisonment on September 29, 1917 for the crime of sedition, because of its call for a general strike in August of the same year. On May 8 of the following year they received a amnesty from the government, after having managed to be elected deputies for the Left Alliance in the general election of February 1918.