Onbma is a damnable, pathological liar.
He believes anything he says is true, just because he says it. Even when he contradicts himself.
In this case, the lie is very simple to demonstrate:
The Winnenden School Shooting in Germany in 2009 - 16 deaths
http://www.cnn.com/2009/WORLD/europe/03/11/germany.school.shooting/index.html?iref=hpmostpop
Moscow had similar shooting some years ago!!! Why not ask Putin???
...and an enemy islamist.