A top FBI official struggled on Thursday to answer basic questions about Antifa after a Mississippi congressman pushed him to explain why he described the left-wing political movement as the nation's top domestic terrorism threat.
GLASHEEN: Antifa is our primary concern right now. That's the most immediate violent threat we're facing
BENNIE THOMPSON: Where is antifa headquartered?
GLASHEEN: ... ... ... we are building out the infrastructure right now
THOMPSON: What does that mean?