The Mayor of London, Sadiq Khan, kicked off his SXSW 2018 keynote with some jokes that sparked a deafening laugh and applause from the audience. He first talked about how he was shocked by the amount of hipsters here in Austin, Texas, followed by a comment that he's excited to be on almost the same time zone as President Donald Trump. Just in case Number 45 decides to feud with him on Twitter. But Khan didn't come to SXSW for his comedy, though his sense of humor was certainly appreciated by those in attendance. Once he got to his real message, London's mayor mainly focused on discussing the impact of social media and technology as a whole on the world.