You believe that someone who would shoot a fleeing screaming child as it's parents looked on wouldn't be capable of raping that child?
Capable or not--it doesn't necessarily follow.
As RightWhale said in an earlier post, these terrorists are certainly baby killers, which is plenty bad by itself.
I will await futher clarification concerning the rest.
I remember how it was reported that the Iraqi soldiers were killing babies in incubators when they invaded Kuwait years ago--which proved to be false propaganda.
It is possible that some kind of sexual assault occurred during the Russian school terror, and it's possible that babies were knifed there also (though is that much worse than being shot, anyway?).
But I will await further examination of those details before believing them.