LONDON (AP) — Fresh from pouring his money and energies into helping Donald Trump win re-election, Elon Musk has trained his sights on Europe, setting off alarm bells among politicians across the continent.

The Tesla and SpaceX chief executive has endorsed the far-right Alternative for Germany, demanded the release of jailed U.K. anti-Islam extremist Tommy Robinson and called British Prime Minister Keir Starmer an evil tyrant who should be in prison.

Many European politicians have been left concerned by the attention. Musk’s feed on his social network X is dotted with abusive language — labeling politicians “stupid cretin” and “sniveling cowards” — as well as retweets of far-right and anti-immigrant accounts.

Andrew Chadwick, professor of political communication at Loughborough University, said Musk is using X “a bit like an old-style newspaper mogul,” to promulgate his political views.

“We’ve seen Musk start to align himself much more obviously with an international movement of the far right,” Chadwick said. ”If you look at the kinds of people who Musk himself is boosting on his platform … he’s increasingly started to assemble a group of different right-wing influencers, many of them with large followings, and presenting their evidence as a basis for his interventions into European politics.”

READ MORE: Musk’s backing of far-right AfD party creates uproar in Germany ahead of key elections

Musk has inserted himself into politics in Germany, which is headed for a Feb. 23 election after center-left Chancellor Olaf Scholz’s fractious three-party coalition government collapsed.

On Dec. 20, Musk wrote on X: “Only the AfD can save Germany,” a reference to the Alternative for Germany party, which is under observation by the domestic intelligence agency for suspected extremism.

He doubled down on support for the AfD in an article for the Welt am Sonntag newspaper, claiming Germany is “teetering on the edge of economic and cultural collapse.” Later this week Musk is due to hold a live chat on X with AfD co-leader Alice Weidel.

Scholz’s response embodies the dilemma faced by European politicians — should they ignore and let Musk’s comments go unchallenged, or engage and risk amplifying them?

Scholz has said it’s important to “stay cool” over personal attacks, but called Musk’s involvement in German politics worrying. In a new year message, Scholz pointedly noted that Germany’s way forward “will not be decided by the owners of social media channels” but by German voters.

French President Emmanuel Macron warned Monday about the risks posed by unchecked power in the hands of tech billionaires and the destabilizing impact they could have on democratic institutions.

“Who could have imagined, 10 years ago, that the owner of one of the world’s largest social networks would intervene directly in elections, including in Germany?” Macron said.

Greek Health Minister Adonis Georgiadis said Musk’s behavior was “troubling and far from amusing.”

“Someone cannot simply use their platform, wealth and connections to try to dictate how governments are formed in each nation,” he told Parapolitika Radio. “This is becoming increasingly dangerous.”

Musk has increasingly focused on British politics since the center-left Labour Party was elected in July, calling Starmer an “evil” leader presiding over a “tyrannical police state.”

Musk’s recent focus is on child sexual abuse, particularly a series of cases that rocked northern England towns several years ago, in which groups of men, largely from Pakistani backgrounds, were tried for grooming and abusing dozens of mostly white girls. The cases have been used by far-right activists to link child abuse to immigration and Islam.

Musk has accused Starmer of failing to bring perpetrators to justice when he was England’s director of public prosecutions between 2008 and 2013 — a charge Starmer strongly denies.

“Starmer must go and he must face charges for his complicity in the worst mass crime in the history of Britain,” Musk tweeted.

Chadwick said “there’s been a hesitancy on the part of the political elite in the U.K. to engage” with Musk’s “incredibly inflammatory remarks.” But Starmer changed tack Monday, condemning “lies and misinformation” and accusing U.K. Conservative politicians who have echoed some of Musk’s points of “amplifying what the far right are saying.”

“I enjoy the cut and thrust of politics, the robust debate that we must have, but that’s got to be based on facts and truth, not on lies,” the prime minister said.

Starmer is facing calls to tighten Britain’s laws on foreign interference, and governments around the world are under pressure to leave X. Both the U.K. and German governments say they have no plans to quit the platform.

Musk’s X is under investigation by European authorities attempting to curb hatred, disinformation and other toxic content on social media. The European Union has launched infringement proceedings against X under the bloc’s Digital Services Act, and EU spokesman Thomas Regnier said it will look at whether Musk’s livestream interview Thursday with the AfD’s Weidel gives inappropriate “preferential treatment” to the party during a pre-election period.

Musk, a self-styled free-speech advocate, is critical of efforts to regulate social media. He has compared British attempts to weed out online misinformation through the Online Safety Act to censorship in the Soviet Union.

Musk clearly enjoys baiting mainstream politicians on social media, but Chadwick said it “remains to be seen” whether his posting changes public attitudes or helps the causes he champions.

And the political interventions carry risk for him. His comments are being watched closely by Tesla investors for signs he could be turning off car buyers who don’t agree with his politics.

Tesla is already struggling in Europe, where new registrations for Musk’s electronic vehicles fell 13% in the first nine months of 2023, according to auto researcher Jato Dynamics. In Germany, Tesla registrations dropped 44%.

Jato senior analyst Felipe Munoz said that Musk’s outspokenness is rare and risky for the owner of a publicly traded company — though it may pay off in the end.

“Europe is going to (the) right,” he said, pointing to politicians including France’s Marine Le Pen and Italian Premier Giorgia Meloni.

“Look at what happened in the U.S. His bet on Trump worked. He is playing the same game in Europe.”

Geir Moulson in Berlin, Sylvie Corbet in Paris, Raf Casert in Brussels, Derek Gatopoulos in Athens, Greece, and Bernard Condon in New York contributed to this story.