Mr. Trump and some of his top advisors have blamed Antifa and groups they call "far-left extremists" for hijacking peaceful protests against police brutality after the death of unarmed black man, George Floyd, during his arrest in Minneapolis Monday.

Attorney General William Barr announced the mobilization of anti-terrorist task forces to arrest and charge criminal organizers and instigators.

It is not clear how many of the protesters nationwide are members of Antifa. Experts say Antifa is not a specific organization but remains a movement that has not really been shaped.