The following was added to the bottom of the NY Times Saturday story about the protests in Washington DC:

Correction: December 13, 2014

An earlier version of this article misidentified, on second
reference, the person who was shot in Ferguson, Mo. It was Michael
Brown, not Darren Wilson. An earlier version of this article also
referred incorrectly to the shooting of Trayvon Martin. He was killed by
a civilian, not by a police officer. In addition, an earlier version of
this correction misspelled Trayvon Martin’s given name as Travyon.

Perhaps they would have saved some space by telling readers what they got right.