Rachel Maddow has the item When the media’s attention span turns reckless.

The discredited IRS “scandal” is more than just an example of congressional Republicans over-promising and under-delivering. It’s even more than a political world, desperate for something new to play with, failing to look before it leaped.
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The taint of “scandal” remains, for no reason other than the political world told the public about allegations, but decided the evidence to the contrary wasn’t important.

As one commenter noted, the Republicans call this “Mission accomplished.”

When the President recently called this a “made-up scandal”, how many of you scoffed because you stopped following the story after the initial reports were made?  How many of you followed my lead by blaming Republicans for cutting the IRS budget and then complaining that the workers didn’t adequately do more work with fewer resources?  How many of you thought that the President’s firing of the head of the IRS lent credence to the original stories?  [Oops! How did that question get in there?]