Why Isn't It Time for Assassination Advocacy on Instagram?

Facebook announced last week that even though it's wrong to call for some people to be killed, it's not right to call for others to be i'm serious. How is it that a handful of companies control the 20 first century public square but have no obligations to any kind of digital first amendment? I doubt the founders were able to imagine something like the internet or gel, but they surely understood the danger of a centralized force that had the power to determine what people could say and what they couldit. And they had a word for that, and that word was tyranny.