Trying to find it, but there was a thread on Twitter a few days ago by a guy who does training seminars for local police on how to deal with terrorism/active shooting situations. He said over the last few years cops have been telling him antifa is their primary concern in that department, and when he'd ask them to name the major attacks caused by antifa they'd be stumped (contrasted with white supremacist and Islamic mass killings).
Also, has to be awesome to decide you need to put barriers in front of your place of worship because someone might try to ram a vehicle into it, then the president tells everyone that those barriers are signs of subversive, anti-American activity.