candidate. mark: should they be regulateed? >> i don't necessarily think so. they should be treated as a public forum. that is an important distinction constitutionally and for the courts because they're not a content provider. they need to be treated as a public forum which google pretends they are. mark: they are a private company, how do you treat it as a public forum? >> that's the distinction. if they want -- google, for example, pretends they're a public forum because they allow different voices and opinions to be heard. facebook is not in the content creation space, they aggregate other people's content. are they a public forum or public company? could still be a private company and operate as a, quote, public forum and censor different voices. a conservative far more likely to get censored on facebook than anyone else which represents a huge threat to the first amendment. mark: so don't use facebook. >> that's the issue. they have 2.1 billion active