In the end of the day, it makes little difference, especially for those who lost loved ones. To them the challenge is to understand and come to terms with the fact that lives where lost for no reason at all. I feel the deepest sympathy for them and I also count my blessings that I'm not one of them.
Regardless of the motives and people behind this act of madness, I ask you to judge them for the individuals they are and for their actions, and not to judge them for their nationality, color of their skin or their religious beliefs.
I have an unsettling feeling that many hope and wishes for the perpetrator to be a muslim. It would "fit" better. It is always easier to be afraid of someone foreign and unknown than to be afraid of your own. I really don't care. If you take an innocent life I don't need to know your reasons, I just need to know you've taken an innocent life.