Racism of rioters takes center stage in Jan. 6 hearing

U.S. Capitol Police Sgt. Harry Dunn speaks with Chairman Rep. Bennie Thompson, D-Miss., after a House select committee hearing Tuesday on the Jan. 6 attack on Capitol Hill. (Andrew Caballero-Reynolds/Pool via AP)

U.S. Capitol Police Sgt. Aquilino Gonell left, and U.S. Capitol Police Sgt. Harry Dunn stand Tuesday after the House select committee hearing on attack on Capitol Hill. (AP Photo/ Andrew Harnik, Pool)

It had only been hinted at in previous public examinations of the Jan. 6 Capitol insurrection: Scores of rioters attacked police officers not just with makeshift weapons, stun guns and fists, but with racist slurs and accusations of treason.