Controversial 'X' Sign at Twitter's Headquarters Sparks Investigation and Uproar

Twitter's new "X" sign, installed on the roof of its San Francisco headquarters as part of its rebranding, is under investigation by the city for lacking proper permits. The San Francisco Department of Building Inspection stated that a building permit is required to ensure the sign's structural soundness and safe installation. Twitter representatives claimed the sign was temporary, but inspectors were denied access to the roof for inspection. This is not the first time Twitter has faced issues with signage, as workers were recently stopped from removing the brand's bird logo due to safety concerns.