Upton Beall Sinclair Jr., was an American author and one-time candidate for governor of California who wrote close to one hundred books in many genres. He achieved popularity in the first half of the twentieth century, acquiring particular fame for his classic muckraking novel, The Jungle. It exposed conditions in the U.S. meat packing industry, causing a public uproar that contributed in part to the passage a few months later of the 1906 Pure Food and Drug Act and the Meat Inspection Act. Time magazine called him "a man with every gift except humor and silence."
He won the Pulitzer Prize for Fiction.
The shriek was followed by another, louder and yet more agonizing..for once started upon that journey, the hog never came back. One by one the men hooked up the hogs and slit their throats. There was a line of hogs with squeals and lifeblood ebbing away.. until at last each vanished into a huge vat of boiling water (some still alive). The hogs were so innocent. They came so very trustingly. They were so very human in their protests. They had done nothing to deserve it.
in the book THE JUNGLE.