Brian pointed this one out to me and I must reveal it: an official repetitious redundancy. In the Miranda Warning (the statement of rights that is read to every person who is arrested at the time of said arrest here in the US), it says, “Anything you say can be used against you in a court of law.”
Thank goodness the Miranda Warning cleared that up. Can you imagine if the criminals were all running around and assuming that they’d be tried in a court of tennis?

Lots of courts that aren't courts of "law."
What about Kangaroo Courts?
Boing, boing, boing.