Like any good entrepreneur who found early success in one market, Elon Musk is now starting to expand to others. Yesterday, Musk—the entrepreneur turned Donald Trump megadonor—hosted a livestream on X with Alice Weidel, the leader of Germany’s far-right political party, Alternative für Deutschland, or AfD.

Political leaders have shunned the Alternative for Germany. But on his social media platform X, Mr. Musk is pitching the party as mainstream.

Elon Musk and a German far-right leader appeared to come to a truly bizarre agreement during a livestreamed X chat Thursday: Adolf Hitler was a communist. Musk had been plugging the chat with the AfD (Alternative for Germany) co-leader Alice Weidel for days,