You may have never heard of it, but Section 230 of the Communications Decency Act is the legal backbone of the internet. The law was created almost 30 years ago to protect internet platforms from liability for many of the things third parties say or do on them. And now it’s under threat by one of its biggest beneficiaries: President Trump, who hopes to use it to fight back against the social media platforms he believes are unfairly censoring him and other conservative voices.
Section 230 says that internet platforms that host third-party content — think of tweets on Twitter, …