X users believe Elon Musk did "the Hitler salute", also known as the "Nazi salute", in a huge inauguration blunder. The billionaire made the eerily similar gesture when he slapped the podium and raised his flat hand into the air.

Elon Musk has seemingly done the unthinkable and shown his knowledge of Nazi history is far deeper than the ADL would like the public to believe.

Some across the political spectrum said the gesture looked like a "Heil Hitler" salute. The ADL said it was not.