Douglass Mackey, once known as “Ricky Vaughn” on Twitter, has been charged in US federal court with conspiring with others to use social media platforms to spread misinformation during the 2016 Presidential Election with the intent of suppressing citizens’ right to vote.

Basically, Mackey was one of the most prolific trolls in the election, getting more traction than many organisations. Here is the US federal complaint, being argued in court in New York.

This is a key test case of the limits of “free speech” in the era of social media.