The claim appeared in a post (archived here) published on X by @RightSide_Uk on June 11, 2026. It opened:

Keir Starmer says he will arrest Elon Musk and 336 million Americans for free speech on X. The Prime Minister of Britain openly threatening to jail the CEO of X and an entire nation's citizens over online posts.

This is what an image attached to the post looked like on X at the time of writing:

(Image source: post by @RightSide_Uk on X.)

The post did not include any fact-checkable details about when and where the purported statement was made and did not include any direct quotes.

Searches on Google News (archived here) and Yahoo News (archived here) showed zero media reports about that.

The claim arose in the context of X owner Elon Musk's posts about the Belfast riots, including one in which he wrote (archived here) on his social media platform: "Murderous migrants beheading innocent people in their home town is what's making people angry, not 'social media'!" That comment was made as Belfast was overwhelmed by violent riots (archived here) in the aftermath of an attempted beheading (archived here) that took place in that city on June 8, 2026. As reported by NBC News (archived here), Musk also shared a post claiming that Starmer "hates white people" and another entry that showed the suspect, who is Black, next to the caption that read "millions must go."

Starmer (archived here) described (archived here) the incident as a "sickening" and "horrific attack," and political leaders of Northern Ireland condemned it (archived here).

Anna Turley (archived here), who is the chair of the Labour Party led by Starmer, described (archived here) Musk's words as "appalling" and said that "anyone that is seeking to drive and exploit a situation like this to drive their own political agenda is grievously wrong and doing damage".

Four days before the attempted stabbing in Belfast on June 8, 2026, Starmer publicly accused (archived here) Musk of trying to "whip up" division following the December 2025 murder of Henry Novak (archived here). Novak's death in December 2025 became the subject of renewed scrutiny when police body camera footage was released approximately six months later.

The current U.K.'s prime minister made similar comments earlier, in September 2025, when he said (archived here) that Musk's words addressed to the participants of an anti-immigration rally were "dangerous".

Yet, Lead Stories found no evidence that Starmer threatened to "arrest Musk and 336 million Americans". That number approximates a 2023 U.S. Census Bureau (archived here) estimate of the total U.S. population.

The U.K. criminal system doesn't even have a capacity to house that many incarcerated people at once. According to the government data (archived here), in September 2025, the country's total prison population was roughly 87,000, with the maximum projected increase reaching 100,000 by November 2032.

The claim appeared in numerous social media posts and also in an article (archived here) published by China's official news agency Xinhua on June 10, 2026, under the title "Dutch legend Ruud Gullit calls on FIFA president to resign over World Cup immigration chaos." It opened:

NEW YORK, June 10 (Xinhua) -- Dutch football legend Ruud Gullit published an open letter on Wednesday, a day before the start of the World Cup, calling on FIFA President Gianni Infantino to resign amid growing controversy surrounding U.S. immigration policies.

Recent days have seen a series of incidents involving teams and officials traveling to the tournament, with Iran's national team forced to move its training camp to Mexico and several support staff denied visas. Somali referee Omar Artan was reportedly refused entry into the United States, Iraqi striker Aymen Hussein was held for seven hours at Chicago airport, and team photographer Talah Salah was denied entry to the country.

This is what the top section of the article looked like at the time of writing:

(Image source: screenshot of english.news.cn.)

The article continued:

The Senegal and Uzbekistan squads were also subjected to extensive searches upon arrival in the United States, while uncertainty remains over whether fans and journalists from countries affected by U.S. travel bans will be able to attend the tournament.

'I have stayed quiet for a long time because I wanted to judge this World Cup on football matters. But the deeper we get into the preparations, the more it becomes clear that football is no longer the main story. For that reason, I believe Gianni Infantino should seriously consider stepping down as FIFA President,' wrote Gullit, who earned 66 caps for the Netherlands and is widely regarded as one of the game's greatest players.

'A World Cup should unite people. Instead, this tournament is becoming a symbol of division, political disputes, travel restrictions, and administrative failures.'

'We are hearing reports that Iranian supporters have had their ticket allocations withdrawn. We have seen the case of Somali referee Omar Artan, selected by FIFA on merit to officiate at the highest level, yet reportedly denied entry into the host country. These are not minor issues. They strike at the heart of what the World Cup is supposed to represent,' he continued.

Gullit said FIFA could not speak about football as a universal game 'while qualified supporters, officials, and participants face barriers that appear unrelated to football itself.'

'The organisation's first responsibility is to protect the integrity and accessibility of the competition,' he insisted.

He then launched a direct criticism of Infantino. 'Leadership is not about appearing in photographs with politicians or celebrating commercial success. Leadership is about taking responsibility when things go wrong. That is why I believe Mr Infantino must ask himself whether he is still the right person to lead world football.'

'The football world deserves answers, accountability, and leadership. If those cannot be provided under the current administration, then perhaps the time has come for new leadership at FIFA,' he added.

Gullit concluded by saying the World Cup 'belongs to the world, not to governments, political interests, or football administrators. It belongs to the players, the referees, and the supporters.'

Gullit replied (archived here) to a now deleted X post (archived here) that repeated the claim with a denial and a demand that the post be deleted.

I want to make it very clear that these are not my words and I'm not affiliated with anything related to these quotes. The fact that you can, without verifying, attribute a quote like this to someone, shocks me.

These are not my words and I'm distancing myself from this publication. Please remove this post.

(Image source: post by @GullitR on X.com.)

Lead Stories also reached out via email to Gullit's spokesperson, but no response was received by the time of writing. We will update this article when it is received.