Government ought to be “small” (functionally and structurally limited).
Government ought to defend the natural rights of its citizens from physical force initiated by criminals and international aggressors.
A government that does not fulfill these duties is evil. The Constitution clearly prevents the government from using guns to break my free speech. Does it also require the government to use its guns to protect my free speech from criminals? Ethically, this is the government’s duty. If the government isn’t doing this, it lacks a legitimate purpose.
Private entities do not have a duty to protect man’s natural rights. But, it is immoral for them to violate a man’s natural rights. Amazon didn’t violate anyone’s natural rights by cancelling a private contract because of public comments.