“A fundamental principle of the First Amendment is that all persons have access to places where they can speak and listen, and then, after reflection, speak and listen once more,” Justice Kennedy writes in the court’s decision, adding that digital spaces — including Facebook and Twitter, which the ban applied to — are also protected.

The case before the court focused on a sex offender prosecuted after posting on Facebook about beating a traffic ticket. “Man God is Good!” he wrote. “How about I got so much favor they dismissed…