American tech billionaire Elon Musk made a surprise address at the campaign launch for Germany’s Alternative for Germany (AfD) party as thousands of people gathered across the country to protest the rise of the far-right party.

The world’s richest person has heaped praise on the Alternative for Deutschland party in recent weeks ahead of the country’s upcoming election.

"It's good to be proud of German culture, German values, and not to lose that in some sort of multiculturalism that dilutes everything," Musk said.