CNN anchors on Monday implied Tesla CEO Elon Musk had done a Nazi salute while speaking before a crowd of Trump supporters during the day’s inaugural events. An excited Musk took the stage at Capital One Arena on Monday and told attendees,

Elon Musk’s use of an arm gesture that distinctly resembled a Roman salute, a greeting arguably best known for its use among members of the Nazi Party, generated confusion and concern as the billionaire tech entrepreneur delivered remarks at an inaugural celebration at Capital One Arena in Washington.

The debate over Musk’s latest move has added fuel to other ongoing feuds, too.