That is comparing apples to oranges. A radio broadcast is a single threaded medium where there is only one communications channel. The very nature that f an social media forum does not need that type of content moderation.
Next you will be trying to defend slavery and argue for the Supreme Court's Dredd Scott v. Stanford decision denying citizenship for blacks and Native Americans.
Any talk show host that crimps your ability to share your opinion is a doing the same as Twitter/Facebook if they moderate your posts or ban your account.