On Monday, the tech billionaire took to the stage at the Capital One Arena in Washington D.C., pumping his arms and screaming "yes" to a rousing crowd of Trump supporters.

Billionaires at the Capitol on Monday included Tesla founder and CEO Elon Musk, Amazon founder Jeff Bezos, Meta CEO Mark Zuckerberg, former presidential candidate Vivek Ramaswamy, OpenAI CEO Sam Altman, billionaire Trump supporter Miriam Adelson, media mogul Rupert Murdoch and others.

Elon Musk’s salute during his speech at the Capital One Arena sparked widespread debate, with critics likening it to the infamous Nazi salute

The world's richest man is strong supporter of right-wing politics, & made gestures today at a rally for Donald Trump's second inauguration that's caused controversy

At noon today, Donald Trump took the presidential oath for a second time, capping a historic political comeback to the White House. As he did on the campaign trail, Trump painted a dark picture of America and took aim at President Joe Biden's leadership as his predecessor sat just steps away.

Tesla CEO and “first buddy” Elon Musk drew a ton of immediate outrage online and on cable news after he made an “odd-looking” gesture during his speech at the Capitol One Arena on Monday to celebrate President Donald Trump’s inauguration.

Trump supporters wait outside Capital One Arena in a queue to get inside amid heavy snow in Washington DC on January 19. The "Make America Great Again Victory Rally is currently outgoing at the Capital One Arena but many people had arrived before sunset to try to get a seat at the rally.

The stage is set inside Capital One Arena for Trump’s inauguration eve rally. Musical acts completed sound checks and tested their equipment as audience members started trickling into the concert and sporting arena.