They're trying to provoke the judge so they can have room for appeal or at least fodder for his mentally stunted base. "This judge was so mean to me, I couldn't get a fair trial." Especially if they can make the judge snap at them, then that's what it's about: an unhinged, emotional, hothead judge abusing their power.
Luckily I think most of the judges smelled him coming and are just giving him all the rope he wants. That's my hope at least. Then if they do jail him for contempt they've got stacks of evidence and second chances. I may be giving them too much credit.