That is according to Trump’s acting DHS Secretary in sworn testimony to a Senate committee last week. Not Antifa (a philosophy, not an organization according to Trump’s FBI director). Not BLM. Not people protesting Trump’s regime (“left wing mobs” according to Barr). White Supremacists.
You have to admire the way that reality eventually “trumps” lies in a free society with a robust free press which can protect whistleblowers willing to stand up for the truth.