That's 'newspeak'.  'War is Peace' is another example.  Read George Orwell's "1984" published in 1949.  Orwell's book is  a vision of our dystopian future (now past, but still apt for our times).  I know that "1984" is almost cliche, but many,, many  people have not read it, especially younger digital aged folk.

James, I think your comment went over the heads of many people.  Casper the Ghost and Make America great again should read "1984".