We've all seen them before. Animal rights activists who show up in court wearing big buttons. People who show up in court wearing t-shirts with pictures of the victim. The day an entire platoon of marines showed up to fill the gallery of a jury trial in their semi-dress uniform (not kidding, I saw it).
What are they trying to do? Well, they're trying to influence the jury. Even worse, they may be tryiong to intimidate the elected judge (I've never seen these shenanigans in federal court).
The federal supreme court is going to decide whether they can do that.