Because he's pushing a narrative. Like many of his kind, he's simply not interested in anything factual unless it supports his position. TDS.
The fact is law enforcement time after time finds Homebrew terrorism as more dangerous than international extremists. And I'm not talking Trump's DOJ redefinition where some car flipping anarchists are considering terrorists, but the white supremacist types that blow up children hospitals.
Anyone under investigation by the FBI or the DoJ for anything should have their requests for firearm permits held until said investigation is cleared.
You will find that most of the home-grown terrorists are not as home grown as you think. When you have been watching ISIS videos 24/7 and communicating with your IMAM day in Camel Land every day, you are not home-grown. Let's remember Capt. Asan or Hasan or whatever his name is- the Fort Hood killer. In fact not only did Obama declare that he was home grown, but that he was not even a terrorist. It was "an isolated instance of workplace violence." In fact, it was already known by the government and his military command that he was in regular communication with Alwar al Alawari the second in command of Al Queda in Yemen- an American. Currently dead having been killed by a drone. The military let Hasan stay in his position even though he was known to be communicating with a senior al queda commander because they were afraid of the backlash for removing someone who was muslim. It's not multicultural you know. The result: 10-15 dead and many, many more wounded. "an isolated instance of workplace violence" according to obama. Thanks to the internet and the international islamic cockroach support network, most of these "home-grown" terrorists are not even remotely home-grown. The Boston bomber is another alleged home-growner. Nope. Spent time in Crapistan and the russians passed intelligence to the FBI that he was a terrorist, which of course the FBI rapidly ignored. Pulse Club shooter and the San Bernandino shooter. Both touted as home grown. Nope. Both radical muslims up to their arse in the international wack-job network, traveling back and forth to camel-land to keep their skills up- watching isis videos 24/7.
I think what he is referring to here is anti-government renegades, which is he labeling white nationalists (this isn't entirely correct, but whatever) that are planning "revolutionary" type incursions.
That could be. I confess to not reading his posts that carefully. Not reading them carefully is highly recommended though. Usually the next ten are not that much different from the last ten so it is not really possible to miss anything.