 In 1872, the Spanish Government hired Pinkerton to help suppress a revolution in Cuba which intended to end slavery and give citizens the right to vote.If Pinkerton knew this, then it directly contradicts statements in his 1883 book "The Spy of the Rebellion", where he professes to be an ardent abolitionist and hater of slavery.The Spanish government abolished slavery in 1880 and a Royal Decree abolished the last vestiges of it in 1886.