In the case of freedom of speech, the First Ammendment doesn't establish a right for citizens, it establishes a prohibition to Congress: "Congress shall make n

In the case of freedom of speech, the First Ammendment doesn't establish a right for citizens, it establishes a prohibition to Congress: "Congress shall make no law [...] abridging the freedom of speech, or of the press" I really don't see how this can be taken to mean that a private company can't establish a rule abridging the freedom of speech. Note that there is another part where I would agree that it establishes a positive right: "Congress shall make no law [...] abridging [...] the right of the people peaceably to assemble, and to petition the Government for a redress of grievances" The language here does seem to assume that there exists a right peaceably to assemble, so you could argue that private companies also have to respect this right, even if the amendment only explicitly calls out Congress for this as well.