Rub-a-dub-dub

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.

court of public opinion

The news media and the public at large, seen as being able to deliver a judgement on someone in the manner of a judge.

go public

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

John Q. Public

A generic individual; some hypothetical average or ordinary citizen.

public intellectual

A well-known, intelligent, learned person whose written works and other social and cultural contributions are recognized not only by academic audiences and readers, but also by many members of society in general.

public purse

A quantity of money collected by a government through taxation and other methods, and used for public purposes; public funds, public money.

wash one's dirty laundry in public

Synonym of air one's dirty laundry in public.