You need to look deeper than that.....what attracts these guys to an ideology that justifies reeking carnage on others?...these guys don't come off as particularly devout...but it seems they become attracted to the idea of going out as some sort of martyr...like suicide by cop with a self aggrandizing twist.......for a guy like this current suspect...and assuming he's  responsible....who grew up here...what alienated him from the culture he grew up in to the extent that he'd try something like this....yeah, you can get simplistic  and say "Islam" but it goes deeper than that....

I don't think we are going to get ahead of this kind of activity until we look at the actual and not the "stated" motives....