Earlier the Anti-Defamation League, an antisemitism and human rights watchdog, posted on X: "Steve Bannon's long and disturbing history of stoking antisemitism and hate, threatening violence, and empowering extremists is well known and well documented by ADL and others.
It comes just weeks after Trump adviser Elon Musk drew criticism after he slapped his hand on his chest and then extended his arm out in a speech at the Capital One Arena in Washington DC celebrating the president's inauguration.
And French far-right National Rally president Jordan Bardella cancelled his scheduled speech at CPAC on Friday in reaction to what he described as "a gesture referring to Nazi ideology".
Mr Musk "made an awkward gesture in a moment of enthusiasm, not a Nazi salute", the ADL concluded.
Steve Bannon has denied making a Nazi salute at a conservative gathering, insisting the gesture was just a wave.
