What we have here is the recognition of a crime trend that has occured all over the country. I posted the thread to call attention to the problem and to provide facts for people who are fighting with governments over right to carry laws, as I stated in the first two posts.
Since you assumed that the article was posted to 'dis' muslims, I went back and read it. There was nothing in there that could be called a 'dis.' I did find one crude and insulting post in the thread. It was post #54.
The "dis" that concerned me was "If even a single percent of that population is motivated". Given that the inventory lists only 13 in 10 years, we're looking at a conceptual jump from about 0.00001% to 1%, which has no justification but fear and/or bigotry.
If we compared other similar crimes, we'd find about the same "trend" there. White male agnostic teens are following a similar pattern in schools.
There is a viable concern, but it is not rooted in these statistics.