Speaking at a rally at a Washington DC arena, the billionaire pounded his chest and aggressively shot his arm out in a stiff-armed salute.
He then turned around and did it again to another part of the cheering crowd.
The South African-born billionaire has posted repeatedly on X since his speech, but has not addressed the gesture.
As you might expect, comments online were quick to speculate about the nature of the gesture.
Some online commenters likened the gesture to a Roman salute, which is also known as a fascist-style salute.
At this time, it is important for everyone to show a little grace, maybe even extend some trust, and just take a moment to pause. We are at a fresh start. Let’s strive for restoration and aim for togetherness in the time to come.
Elon Musk on the phone during Trump’s moment of triumph
Musk has been appointed to head a new cost-cutting body in the Trump Administration, named the Department of Government Efficiency (DOGE).
He was named the co-leader of the department alongside Trump acolyte and former presidential candidate Vivek Ramaswamy.
But even as the inauguration celebrations went on, it was reported Ramaswamy would leave DOGE.
