an excellent read; thank you for pointing it out

the entire letter is worth the time to read but for those who don't have time, the conclusion para is just so perfect:

In conclusion, Mr. Braynard will not be intimidated into silence by a bullying, bloviating missive sent by a global corporation’s legal henchmen seeking to chill his constitutionally protected speech on a matter of great public interest. Indeed, no company – and especially no lawyer – should send such a threatening letter to a potential witness who is merely exercising his First Amendment rights on a matter of the highest national interest. It is ironic that a firm that vaunts its expertise in defending clients against unfounded reputational attacks would engage in drive-by digital character assassination of the nature seen in your letter. It is you and your clients who owe apologies and retractions to our client.