Harry Smith is right when he says:
To fail to differentiate between these two [murder and killing] is to deprive the reader of information that is important.
That is why, after reporting the straight news that militants killed an Arab youth, we ought to try and report some additional information.
If we can find someone on the scene or related to it, or who has a moral/legal point of view about it, then we can quote them.
For example:
* A statement by Fatah defended the killing as "regrettable but utterly necessary ... Anyone who gets in our way must die, it is the will of Allah." (totally made-up hypothetical statement)
* A statement by Israel Defense Forces (IDF) said: "These militants are animals, they murder anyone who gets in their way." (also hypothetical)
Each of these sample statements provides the necessary information. One source says the killing was NOT murder, and the other source says it WAS.
The Wikipedia cannot, unfortunately, let the reader know which source is right but anyone with an ounce of common sense knows that side @#$ is usually right in these matters. (I'm not saying which bullet point @#$ refers to...)
Equivocally,
Uncle Ed