Rep. Jerry Nadler (D-N.Y.) was among those who sharply criticized billionaire Elon Musk on Monday for making “what appears to be a Heil Hitler salute” during an event celebrating the inauguration of President Trump.

The Anti-Defamation League (ADL), a non-profit focused on combating antisemitism, defended tech billionaire Elon Musk’s “awkward” gesture during a Monday celebratory event which some critics panned as a fascist salute.

Meteorologist Sam Kuffel criticized Elon Musk on social media for his straight-arm gesture some likened to a Nazi salute at the Trump inauguration.

Elon Musk responded to criticism of his gesture during a post-inauguration speech on Monday, saying those comparing it to a Nazi salute were deploying "dirty tricks."

Several of the largest communities on Reddit have banned links to X following Elon Musk's gesture at Donald Trump's inauguration.

Illinois Gov. JB Pritzker said, "Illinois is going to continue to be a beacon of policies that are antithetical to the retrograde policies of a Trump administration.”

Sir Keir Starmer has visited Auschwitz, a place he described as "utterly harrowing", and said he was determined to fight the "poison of antisemitism". The Prime Minister visited the former Nazi concentration camp as he travelled to Poland to meet the country's political leaders.

Scores of Reddit users called for bans on X links after Musk made two enthusiastic salutes that immediately drew criticism on Monday.

Musk, the world's richest man and a close ally of President Trump, was speaking at the Capital One Arena in Washington DC when he made the gesture. "My heart goes out to you. It is thanks to you that the future of civilisation is assured," the 53-year-old said, after giving the second one-armed salute.

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

The billionaire tech titan caused outrage on social media after he placed his right hand over his heart and then extended his arm into the air as he thanked Trump’s supporters on Monday

Many social media users noticed the gesture looked like a Nazi salute. Musk fanned the flames of suspicion by not explicitly denying those claims in a dozen posts since.