Left-wing activists have projected a giant image of Elon Musk doing a gesture that has been likened to a Nazi salute alongside the word “heil” onto Tesla’s Berlin factory.

Political activists in Germany projected an image of Elon Musk's infamous raised-arm salute and the word "Heil" onto the outside of his Tesla plant.

Authorities in Germany are investigating a controversial image projected onto the Tesla Gigafactory in Grünheide, near Berlin.

Elon Musk, the world's richest man and a close ally of President Donald Trump, has faced widespread accusations of making a Nazi gesture twice during a speech to a crowd of Trump supporters gathered at Washington's Capital One Arena for an indoor "Presidential Parade" on Monday, shortly after Trump's second inauguration.

Led By Donkeys have projected a huge image of Elon Musk's dubious salute onto the side of a Tesla factory along with the words 'Heil Tesla.'

The "Sieg Heil" heard 'round the world has made its way to Germany, where activists are using that now-infamous image at Tesla's Gigafactory.

Elon Musk made a surprise appearance during Germany's AfD (Alternative fuer Deutschland) election campaign event in Halle in eastern Germany on Saturday, speaking publicly in support of the far right party for the second time in as many weeks.