Because this gives them the lever to pull that will cause violence on the streets, violence that the MSM will attribute to "Trump Supporters, QAnons, Deplorables and White Power Racists."
Antifa trained with ISIS in Syria.
Antifa has weapons caches all over the US. One busted so far to our knowledge…
https://www.latimes.com/local/lanow/la-me-ln-atf-lapd-investigation-20190508-story.html
Armed insurrection - wow. If that isn't treason I don't know what is.