And its not just the media. Example from baseball is velocity - until the 1970s it was never used and guys just threw fast or had good speed. But then all of a sudden they had good velocity - which is actually wrong, because velocity in physics is a vector, meaning it implies speed and direction.
When it comes to language, at least for my perception of American English, the narrative of the '70s saw a paradigm shift with Watergate. Watergate--and the succession of political scandal "gates" ever since--saw a heightening of political verbal obfuscation that Orwell foretold.
Many words and phrases had seldom, if ever, been heard before that "point in time" when Watergate began to achieve notoriety (and it seems to have been around than that "notoriety" and fame became colloquially interchangeable.) Who had used, or heard, of an expletive deleted, or executive privilege, or non-denial denials, or cancers in the little "c" sense, or enemies lists, or stonewalling, or inoperative? In just two years, all these words and phrases became prominent additions to the language.
The close of the Watergate era occurred when Gerald Ford was sworn into office and announced "our long national nightmare is over." But from that time on, every political scandal has lived in a gated community.
A Princeton PhD, was a US diplomat for over 20 years, mostly in Eastern Europe, and was promoted to the Senior Foreign Service in 1997. For the Open World Leadership Center, he speaks with
its delegates from Europe/Eurasia on the topic, "E Pluribus Unum? What Keeps the United States United" (http://johnbrownnotesandessays.blogspot.com/2017/03/notes-and-references-for-discussion-e.html). Affiliated with Georgetown University (http://explore.georgetown.edu/people/jhb7/) for over ten years, he shares ideas with students about public diplomacy.
The papers of his deceased father -- poet and diplomat John L. Brown -- are stored at Georgetown University Special Collections at the Lauinger Library. They are manuscript materials valuable to scholars interested in post-WWII U.S.-European cultural relations.
This blog is dedicated to him, Dr. John L. Brown, a remarkable linguist/humanist who wrote in the Foreign Service Journal (1964) -- years before "soft power" was ever coined -- that "The CAO [Cultural Affairs Officer] soon comes to realize that his job is really a form of love-making and that making love is never really successful unless both partners are participating."