Opinion column

An op-ed (originally short for "opposite the editorial page" although often taken to stand for "opinion editorial") is a written prose piece typically published by a newspaper or magazine which expresses the opinion of a named author usually not affiliated with the publication's editorial board. Op-eds are different from both editorials (opinion pieces submitted by editorial board members) and letters to the editor (opinion pieces submitted by readers).

Although standard editorial pages have been printed by newspapers for many centuries, the direct ancestor to the modern op-ed page was created in 1921 by Herbert Bayard Swope of The New York Evening World. When Swope took over as editor in 1920, he realized that the page opposite the editorials was "a catchall for book reviews, society boilerplate, and obituaries". He is quoted as writing:

It occurred to me that nothing is more interesting than opinion when opinion is interesting, so I devised a method of cleaning off the page opposite the editorial, which became the most important in America ... and thereon I decided to print opinions, ignoring facts.

But Swope included only opinions by employees of his newspaper, leaving the "modern" op-ed page to be developed in 1970 under the direction of The New York Times editor, John B. Oakes. The first op-ed page of The New York Times appeared on 21 September 1970.

Beginning in the 1930s, radio began to threaten print journalism, a process that was later accelerated by the rise of television. To combat this, major newspapers such as The New York Times and The Washington Post began including more openly subjective and opinionated journalism, adding more columns and growing their op-ed pages.

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Wikipedia