Today in Labor History March 25, 1811: Oxford University expelled Percy Bysshe Shelley for publishing the pamphlet The Necessity of Atheism. Shelley was an English Romantic poet, radical in both his art and his politics. His poem "The Mask of Anarchy," which he wrote in 1819 after the Peterloo Massacre, is one of the first modern descriptions of nonviolent resistance. His admirers included Karl Marx, Gandhi and George Bernard Shaw. He was married to Mary Shelley, author of “Frankenstein.”