Bad as euphemism is, however, indirection is worse. I notice that a writer in a recent magazine gives this advice to budding newspaper men: "Even where opinion is admitted, as on the editorial page, fact is often more desirable than opinion. Thus it is better to scrap an editorial calling the mayor a liar and a crook, and to write another which, by reciting facts without using adjectives and without calling names, makes it obvious that the mayor is a liar and a crook."
Free Speech and Plain Language (1936)