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- Elon Musk's sweeping rebrand of Twitter to "X" took effect on Monday.
- As the new logo debuted on the site, efforts were underway to erase a Twitter sign in San Francisco.
- Police looked into "a possible unpermitted street closure," an SFPD representative confirmed to Insider.
Elon Musk spirited the "X" logos onto Twitter's site seemingly overnight, but it may take a while longer to change the sign outside his company's headquarters.
Police showed up on Monday afternoon during efforts to remove the "Twitter" lettering from the massive sign affixed to the building.