[cynical] At least this helps against over-population in those countries [/cynical]
Unfortunately these atrocities are no longer news in the West. Everybody expects it to be so....
If the Guardian and the Mail are reporting the same story, you can take it as a given that this type of atrocity is still news in the West, (or at least in Britain). And no, killing random 8 year olds won't help one iota against over population.

The way to stop over population is to educate the female populace, raise the status of women and cut child mortality rates.