https://www.theguardian.com/technology/2022/oct/28/elon-musk-twitter-hate-speech-concerns-stock-exchange-deal > Shares taken off stock exchange as world’s richest man completes deal to buy social media platform > The world’s richest man, Elon Musk, has completed his $44bn acquisition of Twitter, amid warnings from politicians and campaigners that hate speech on the platform must be held in check.