There are more than a few coincidences that suggest this attack could have had a specific target.
American Thinker | Was the Oregon mass shooting an Islamist attempt to assassinate Alek Skarlatos?
In August the very high-profile [Alek] Skarlatos, a devout Christian, helped to disarm Ayoub El-Khazzani, a Moroccan with ties to radical Islam, on a high-speed train traveling from Amsterdam to Paris. …
Skarlatos has publicly acknowledged that he is currently a student at Umpqua, near Roseburg, Ore., and that he was supposed to be attending classes there on Thursday when Harper-Mercer went on a bloody rampage.
More specifically, Skarlatos said he was supposed to be present that day in Snyder Hall, the same building where Harper-Mercer carried out his massacre.
Read the entire article. It is an intriguing idea. That this was not random. That it was a planned act of terror as retribution for the Train incident in France.