Unless they actively encouraged people to do these kinds of things, it's a pretty birdbrain argument to say they played a 'contributing factor' to these events. Of course, you are basing this arguments on no evidence whatsoever, if I am not mistaken, because as owner of Olsen I have not personally had people uttering the wish for these things to happen while I was present.
It's the exact same argument that is made when comparing violence to playing video games. People, atleast in the logical world in which I live, are responsible for their own actions.
Inb4 the suicide-inducing "omg ur just defending rdm'ers", people who do these kinds of things should naturally be punished, but putting the blame on others where it does not belong is unjustified and unbefitting of a moderator.