Here’s the headline
Don Trump Jr claims ‘free speech is dead’ after father’s Twitter ban
Here’s the Amendment he claims is dead.
Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.
Someone may want to explain to Junior the First Amendment protects Free Speech from Governmental interference. It prohibits Congress from restricting free speech or freedom of the press.
Private enterprises like Twitter or Facebook are free to promulgate any rules they like limiting what appears on their sites as long as they are not discriminating based on race, sexual orientation, religion or ethnicity. And people are free to read or ignore such sites.
Alex Jones can refuse to publish pieces by AOC just as Vanity Fair can refuse to publish a piece by Donald Trump Jr. There is no diminution of Free Speech in these examples
That Twitter banned the President of the United States says more about the character of the President than anything else. It is not a violation of his First Amendment rights. He can publish anything he likes, there are all sorts of sites that live to promulgate his lies.
As long as the government isn’t stopping Mr. Trump and his minions from publishing or speaking their minds, there is no First Amendment violation. But like yelling “Fire” in a crowded theater, it is incumbent on the writer or the speaker to restrain from spreading lies or publishing dangerous incitements to violence. Otherwise, sites who take seriously their responsibility to ensure they are not abetting violence have an obligation to restrict such positions.