court of public opinion

air one's dirty laundry in public

To reveal one's sordid secrets to the public.

air one's dirty linen in public

Synonym of air one's dirty laundry in public.

go public

To make something public; to announce publicly or to the press.

have the ball in one's court

Alternative form of the ball is in someone's court.

hold court

To serve as the principal discussant or center of attention in an informal gathering of friends, associates, etc.

horseback opinion

An opinion given without thorough consideration or a firm basis, often used in a casual or speculative way.

John Q. Public

A generic individual; some hypothetical average or ordinary citizen.

kangaroo court

A judicial or quasi-judicial proceeding, or a group of people which conducts such proceedings, which is without proper authority, and often acts abusively or decides unjustly.