Courtesy of a link at Joel's place, we find this letter from Thomas Jefferson in 1807 - two hundred and ten years ago.
Nothing can now be believed which is seen in a newspaper. Truth itself becomes suspicious by being put into that polluted vehicle ... I will add, that the man who never looks into a newspaper is better informed than he who reads them; inasmuch as he who knows nothing is nearer to truth than he whose mind is filled with falsehoods & errors. He who reads nothing will still learn the great facts, and the details are all false.
There's more at the link.
I didn't know that Jefferson numbered prophecy among his many gifts! His words apply just as well to the mainstream news media today as they did to the newspapers of 1807.