Cause célèbre
A cause célèbre (/ˌkɔːz səˈlɛb(rə)/ ⓘ KAWZ sə-LEB(-rə), French: [koz selɛbʁ]; pl. causes célèbres, pronounced like the singular) is an issue or incident arousing widespread controversy, outside campaigning, and heated public debate. The term continues in the media in all senses. It is sometimes used positively for celebrated legal cases for their precedent value (each locus classicus or "case-in-point") and more often negatively for infamous ones, whether for scale, outrage, scandal, or conspiracy theories. The term is a French phrase in common usage in English. Since it has been fully adopted into English and is included unitalicized in English dictionaries, it is not normally italicized despite its French origin.
It has been noted that the public attention given to a particular case or event can obscure the facts rather than clarify them. As one observer states, "The true story of many a cause célèbre is never made manifest in the evidence given or in the advocates' orations, but might be recovered from these old papers when the dust of ages has rendered them immune from scandal".