‘X’ Logo Installed atop Twitter Building, Spurring San Francisco to Investigate Permit Violation

 Workers install lighting on an "X" sign atop the downtown San Francisco building that housed what was formally known as Twitter, now rebranded X by owner Elon Musk, Friday, July 28, 2023. (AP)
Workers install lighting on an "X" sign atop the downtown San Francisco building that housed what was formally known as Twitter, now rebranded X by owner Elon Musk, Friday, July 28, 2023. (AP)
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‘X’ Logo Installed atop Twitter Building, Spurring San Francisco to Investigate Permit Violation

 Workers install lighting on an "X" sign atop the downtown San Francisco building that housed what was formally known as Twitter, now rebranded X by owner Elon Musk, Friday, July 28, 2023. (AP)
Workers install lighting on an "X" sign atop the downtown San Francisco building that housed what was formally known as Twitter, now rebranded X by owner Elon Musk, Friday, July 28, 2023. (AP)

The city of San Francisco has opened a complaint and launched an investigation into a giant “X” sign that was installed Friday on top of the downtown building formerly known as Twitter headquarters as owner Elon Musk continues his rebrand of the social media platform.

City officials say replacing letters or symbols on buildings, or erecting a sign on top of one, requires a permit for design and safety reasons.

The X appeared after San Francisco police stopped workers on Monday from removing the brand's iconic bird and logo from the side of the building, saying they hadn't taped off the sidewalk to keep pedestrians safe if anything fell.

Any replacement letters or symbols would require a permit to ensure “consistency with the historic nature of the building” and to make sure additions are safely attached to the sign, Patrick Hannan, spokesperson for the Department of Building Inspection said earlier this week.

Erecting a sign on top of a building also requires a permit, Hannan said Friday.

“Planning review and approval is also necessary for the installation of this sign. The city is opening a complaint and initiating an investigation,” he said in an email.

Musk unveiled a new “X” logo to replace Twitter’s famous blue bird as he remakes the social media platform he bought for $44 billion last year. The X started appearing at the top of the desktop version of Twitter on Monday.

Musk, who is also CEO of Tesla, has long been fascinated with the letter X and had already renamed Twitter’s corporate name to X Corp. after he bought it in October. One of his children is called “X.” The child’s actual name is a collection of letters and symbols.

On Friday afternoon, a worker on a lift machine made adjustments to the sign and then left.



Pope Leo Warns Politicians of the Challenges Posed by AI

This handout photograph taken and released by the Vatican Media on June 21 2025, shows Pope Leo XIV delivers his speech as he meets with participants in the Jubilee of the Rulers, in The Vatican. (Handout / Vatican Media / AFP)
This handout photograph taken and released by the Vatican Media on June 21 2025, shows Pope Leo XIV delivers his speech as he meets with participants in the Jubilee of the Rulers, in The Vatican. (Handout / Vatican Media / AFP)
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Pope Leo Warns Politicians of the Challenges Posed by AI

This handout photograph taken and released by the Vatican Media on June 21 2025, shows Pope Leo XIV delivers his speech as he meets with participants in the Jubilee of the Rulers, in The Vatican. (Handout / Vatican Media / AFP)
This handout photograph taken and released by the Vatican Media on June 21 2025, shows Pope Leo XIV delivers his speech as he meets with participants in the Jubilee of the Rulers, in The Vatican. (Handout / Vatican Media / AFP)

Pope Leo warned politicians on Saturday of the challenges posed by the rise of artificial intelligence (AI), addressing its potential impact on younger people as a prime concern.

Speaking at an event attended by Italian Prime Minister Giorgia Meloni and parliamentary delegations from 68 countries, Leo revisited a topic that he has raised on a number of occasions during the first few weeks of his papacy.

"In particular, it must not be forgotten that artificial intelligence functions as a tool for the good of human beings, not to diminish them or even to replace them," Leo said at an event held as part of the Roman Catholic Jubilee or Holy Year.

AI proponents say it will speed up scientific and technological progress and help people to carry out routine tasks, granting them more time to pursue higher-value and creative work.

The US-born pontiff said attention was needed to protect "healthy, fair and sound lifestyles, especially for the good of younger generations."

He noted that AI's "static memory" was in no way comparable to the "creative, dynamic" power of human memory.

"Our personal life has greater value than any algorithm, and social relationships require spaces for development that far transcend the limited patterns that any soulless machine can pre-package," he said.

Leo, who became pope in May, has spoken previously of the threat posed by AI to jobs and has called on journalists to use it responsibly.