Baron Cohen has been an outspoken critic of social media platforms including Twitter, Google and YouTube, calling them "the greatest propaganda machine in history" at the Anti Defamation League's International Leadership summit in November.His particular concern is that the platforms lead to a proliferation of antisemitic material. “It’s no surprise that the greatest propaganda machine in history has spread the oldest conspiracy theory in history – the lie that Jews are somehow dangerous. As one headline put it, ‘Just Think What Goebbels Could Have Done with Facebook,'” he said at the summit.Musk has also long been a critic of the sites. In 2018, he removed the Facebook pages for his companies Tesla and Space X in response to a widely shared tweet circulating at the time, calling on people to remove their pages. "What's Facebook?" Musk sniped.By midday, both pages had been taken down. They each had more than 2 million likes. "I don't use [Facebook] & never have, so don't think I'm some kind of martyr or my companies are taking a huge blow," Musk later Tweeted, according to CNN. "Also, we don't advertise or pay for endorsements, so... don't care."The companies do maintain pages on Instagram, which is owned by Facebook, as does Musk himself. He has previously said that the site is "probably ok," as long as it maintains a distance from Facebook.#DeleteFacebook It’s lame
— Elon Musk (@elonmusk) February 8, 2020