At first I thought ISIS theory but based on the widespread immediate demand for gun control vs search for motive I believe it was a Deep State event to push freedom killing legislation. To create an event to never let a serious crisis go to waste. The question should be who stands to benefit here?
metal detector companies.
Could it be he was triggered by the shootings at San Bernardino, Orlando and Seattle Mall? All were committed with semi-autos before the sudden rise of the 33 weapons he obtained in the last year. Of the 47 found in the room and his two houses, what is the complete list of what they were and when they were purchased?
Could it be in his sick mind he saw nothing being done about the semi’s and how much did the MSM harping about something needed to be done, about automatics or machine guns, drive him over the edge?
We now have the knowledge and optics of the arsenal he had in the room. What we don’t know is if he was diagnosed with some sort of terminal ailment. It would not be the first time that some kook decided to go out in a blaze of glory and possibly this one had an agenda and he knew how the left would play it.