Wiktionary
n. (context informal English) A large gathering of reporters at the scene of a news event.
Wikipedia
Media circus is a colloquial metaphor, or idiom, describing a news event where the media coverage is perceived to be out of proportion to the event being covered, such as the number of reporters at the scene, the amount of news media published or broadcast, and the level of media hype. The term is meant to critique the media, usually negatively, by comparing it to the spectacle and pageantry of a circus, and is considered an idiom as opposed to a literal observation. Usage of the term in this sense became common in the 1970s.
Usage examples of "media circus".
First and foremost being that when the prosecution begins to turn the case against Violet Dearing into a media circus, Gillian gets a change of venue to a Circus!
Talk shows, book tours all the rubbish that publishing's turned into, not marketing the work but selling the author in this whole revolting media circus turning the creative artist into a performer in this frenzy of publicity because I wasn't a baseball player with AIDS or a dog that lived in the White House I was just too old, try to deal with these publishers all they want is your coffee, put it down there Ilse not on the books!
I wrote a letter to Mr Megler and to the judge saying that I thought it was a media circus.
The Illuminati had intended to turn this evening into a media circus.
Would you care to predict the media circus surrounding this trial?
It detailed the gruesome death and media circus surrounding the entrapment of a caver in the 1920s.