The presdient (sic) also pointed out that U.S. intelligence agencies have determined white supremacists pose "the most lethal threat to the homeland today."

I sort of discerned this from watching TV newscasts over the past 10 or so months.  Every cable channel, 24 x 7, nothing but those rowdy hooligan Promise Keepers and Proud Boys, looting, burning buildings, attacking the police... I could go on. 

I wish I could say its all an 'idea' but that's ANTIFA; the real threat comes from employed middle-aged white people and honorably discharged veterans of our Armed Services.