This is the full text of a classic science fiction story called the “Liberation of Earth” by William Tenn. It was first published in the May 1953 issue of the Future Science Fiction monthly magazine, this amusing, insightful and thought-provoking satire of human pretentiousness in a galactic environment. Indeed; the Earth is invaded by warring very-superior, very-different and very-uncaring aliens, with very terrifying results. This was one of the best stories of the distinguished university professor Philip Klass (1920-2010). He was the author of some 60-odd excellent science-fiction stories, mostly under the pen-name of William Tenn.