Nonsense. Not a "bigger" threat. Just a "threat". And apparently, a "fringe white nationalist"—or something worse—is the one who managed to take a fellow American's life during the weekend's events in Charlottsville.
Inasmuch as Antifa, BLM, and their ilk didn't kill anyone in Charlottsville, is it any surprise that the primary focus is on the person who apparently committed murder and attempted murder?
For that one moment, at least, this person was "a bigger threat to America"—not just because he killed someone, but because he also gave the Left a golden opportunity to exploit his stupidity in such a way as to tangibly increase the "threat to America".
I don't know whether this person was a provocateur or not, but he gave them an incident to exploit—on a silver platter...
That's the mainstream media narrative, for sure. However, there are also credible eye witness accounts saying that this guy panicked, swerved, and unintentionally killed an Antifa "fellow American" because Antifa and BLM thugs were smashing up his car with bricks and baseball bats. I'm not going to be his judge, jury, and executioner until all of the facts are in, assuming that ever happens.
And more to the point than any of this: BLM and Antifa violence has the full blessing of the mass media and the liberal elite. White nationalist violence does not. That's why conservatives who get bent into pretzels trying to ingratiate themselves to liberals by attacking the alt-right today are barking up the wrong tree. The political establishment is demanding that President Trump denounce all "white nationalists" (basically anyone to the Right of John McCain or Jeb Bush) and get rid of Steve Bannon on account of Fields' actions (which again are still open to debate). No similar demands were placed on Obama or on Hillary when BLM-inspired hoodlums murdered cops, beat up elderly white people, or burned and looted cities.