Thank you all.
Now thank god the police corrected the number of victims down to 16. But there are still some (around 5) people seriously injured.
They say it was probably an act of revenge. The boy was not permitted to finish school and write the finishing exams because of his bad marks. They say that he hated the teachers.

Reading the discussion above I would like to tell something of my experiences with the amok cases around here of the recent years: At a rather high percentage of the cases they say in the news that the killer had been very interested in guns and usually had had already a collection of guns at home.
I think if somebody is really of this kind it does not matter if the guns are legal or not.
But if guns continue forbidden, and not every second household has a gun in the drawer, it keeps perhaps people away from starting the gun hobby.
I think one massive problem is the fact that we can see comparable things on TV every day. And we can get as much horror, blood and aggressions as we want on video and in computergames. How can you keep an objective view for the life if you are consuming dead people already on breakfast TV?

The dicussion is that difficult because there is no black and no white. I would like to ask you all for tolerating the other´s opinion also and listen what they have to say.

Again, thank you all.

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If every material thing is gone, my smile and my tears stay left.