Musk, the world's richest man and a close ally to Trump, was accused by many of twice making a Nazi gesture while speaking briefly to a crowd of Trump supporters gathered for an indoor "Presidential Parade" at Washington's Capital One Arena shortly after Trump was sworn in for his second term on Monday.

Elon Musk faces backlash after a controversial gesture at Trump's inauguration, interpreted as a Nazi salute. Tesla owners express outrage on social media, prompting debates and impacting the brand's image.

There is debate about what gesture the tech billionaire meant to make at the Capital arena on Monday. Here's what people are saying.