Of course but on the surface this appears to be different than the usual sort of racist or Islamic extremist attack. Currently his motivation is unknown but it doesn't seem to be a terrorist attack and in my opinion mental illness seems the most likely cause at the moment. It's natural that people would assume that a similar attack from someone of middle Eastern appearance - possibly with an Allahu Akhbar thrown in for good measure- would be religiously motivated given the sheer number we have seen in recent times. The colour of his skin is largely irrelevant but his motivations if they are ever discovered will tell us a lot. After all, anders breivik was undoubtedly a terrorist and he is white.