For better or worse, editing is what editors are for; and editing is selection and choice of material. That editors newspaper or broadcast can and do abuse this power is beyond doubt, but that is no reason to deny the discretion Congress provided.
Once I became the editor of the school newspaper, I had a key to the school, and I went to the school cafeteria and just took the food they threw away.
Great is journalism. Is not every able editor a ruler of the world, being the persuader of it?
An editor is the uncrowned king of an educated democracy.
As large publishers turn into monopolies, and the MBAs who are running them - maybe editors used to run them before - are steadily tightening the screws, they feel more and more that they get to call the shots.
And if you want to know why great editors scare the pants off of writers everywhere, read 'Eats, Shoots and Leaves' by Lynne Truss. The punctuation police are everywhere!
You're at the mercy of the editors' hands.