Tesla CEO Elon Musk has apparently stepped up pressure on several left-wing groups backed by teacher unions and George Soros, who signed a letter urging top Twitter advertisers to boycott the social media platform if Musk goes through with his plans to ease restrictions on free speech.
In response to a Daily Mail article reporting on the groups behind the anti-Musk campaign, Musk wondered "are those who fund organizations fully aware of what these organizations are doing."
Twenty-six groups, including Media Matters for America and UltraViolet, have signed an open letter urging marketers to ensure that their advertising deals with Twitter are subject to compliance with its previous content moderation policy on hate behavior.
"As a leading advertiser on Twitter, your brand risks being associated with a platform that amplifies hate, extremism, health disinformation and conspiracy theories," the letter reads.
Musk called for an investigation into the group after the letter was released on Tuesday.
“Who funds these organizations that want to control your access to information? Let's investigate," Musk tweeted. "Sunlight is the best disinfectant," he added on Twitter.
Late last month, Twitter and Musk struck a $44 billion deal to take the social media giant private, raising fears among the far left that Musk would turn Twitter into free speech for everyone.