Norfolk Superior Court Judge Beverly Cannone has been sued for reinstating a buffer zone, limiting Karen Read supporters from demonstrating outside the Dedham courthouse, during the contentious murder trial.

At the center of the trial is Superior Court Judge Beverly J. Cannone, who also presided over last year's proceedings. A longtime judge for Massachusetts' Superior Court, Cannone is a South Shore native who was once a public defender. Here's what to know about her.

The group said reinstating the buffer zone "is a lawless" act that "violates the constitutional guarantees of free speech and due process."