WHO exactly was the competition in the race to be the most trusted man in America? Lyndon Johnson? Richard Nixon?

Not to take anything away from Walter Cronkite, but he beat out Henry Kissinger by only four percentage points when a 1974 Roper poll asked Americans whom they most respected. The successive blows of Vietnam and Watergate during the Cronkite ’60s and ’70s shattered the nation’s faith in most of its institutions, public and private, and toppled many of the men who led them. Such was the dearth of trustworthy figures who survived that an unindicted official in a disgraced White House could make the cut.

In death, “the most trusted man in America” has been embalmed in that most comforting of American sweeteners  nostalgia  to the point where his finest, and most discomforting, achievements are being sanitized or forgotten. We’ve heard much sentimental rumination on the bygone heyday of the “mainstream media,” on the cultural fractionalization inflicted by the Internet, and on the lack of any man who could replicate the undisputed moral authority of Uncle Walter. (Women still need not apply, apparently.) But the reason to celebrate Cronkite has little to do with any of this and least of all to do with his avuncular television persona.

What matters about Cronkite is that he knew when to stop being reassuring Uncle Walter and to challenge those who betrayed his audience’s trust. He had the guts to confront not only those in power but his own bosses. Given the American press’s catastrophe of our own day  its failure to unmask and often even to question the White House propaganda campaign that plunged us into Iraq  these attributes are as timely as ever.