Knock-Knock: How the FBI Scares Off Would-Be Capitol Bombers

Just a 'friendly visit' from unsmiling agents lets far right fantasists know they're on the government's radar

The FBI-Homeland Security intelligence bulletin circulated at midnight Tuesday is ominous, but entirely predictable, given widely published reports of far-right chatter over the past several weeks:  It alerts local law enforcement officials that extremists may try to breach the U.S. Capitol Thursday and attack Democratic lawmakers. 

The warning is based …