However, to me, the problem with your point is that Newsweek doesn't even have the excuse that this is something that should be brought to the attention of the American public, since it was FALSE to begin with.
Even assuming they thought it was true, they obviously did not check with the Pentagon beforehand nor did they verify their source. They simply ran with it and gave no thought (or worse, maybe they did) to the violence that would ensue from this story.
Bingo! Someone gets it.
Yes, the fact that it was false compounds the error -- the error being the publishing of this story to begin with (even if true).
On an "Atrocity" scale of 0 to 10, the events in this story are about a .002. On a "Bad Things That Can Happen To Innocents Overseas If We Publish This Story" scale of 0 to 10, this would be a 9.9999.