The first time the term was used when Valachi testified for the first time ever against what was better known as the "mafia"
In October 1963, Valachi testified before Senator John L. McClellan's congressional committee on organized crime, the Permanent Subcommittee on Investigations of the U.S. Senate Committee on Government Operations. He gave the American public a firsthand account of Mafia activities in the United States.[1][2] According to a Justice Department official Valachi "showed us the face of the enemy."[3]
Valachi, a low-ranking member of the New York-based Genovese crime family, was the first ever government witness coming from the American Mafia itself. Before Valachi, federal authorities had no concrete evidence that the American Mafia even existed. His disclosures never led directly to the prosecution of many Mafia leaders, but he was able to provide many details of its history, operations and rituals, aiding in the solution of several uncleared murders, as well as naming many members and the major crime families.
Valachi testified in vivid and minute detail on his day-to-day life in organized crime in a first-time-ever public account of life as a soldier of La Cosa Nostra, including its rites of initiation.[4] These televised hearings brought home to average Americans the savage violence and intimidation routinely used by the Mafia to further and protect its criminal enterprises.[5]
So we know now this low level nobody has conflated the term, if not outright coined it, "cosa nostra."Joseph Michael "Joe Cargo" Valachi (September 22, 1904 – April 3, 1971) was an American gangster who is notable as the first member of the Italian-American Mafia to acknowledge its existence publicly. He is credited with popularization of the term cosa nostra.[1]
Why is this interesting?
This is interesting now when you see Catholic Italians we're getting rightfully pissed the fuck off. Cosa Nostra is an Italian language term that means "our thing." Once this term was coined the mafia became synonymous with Italians.Attorney General Nicholas Katzenbach authorized the public release of Valachi’s manuscript. He hoped that publication of Valachi’s story would aid law enforcement and possibly encourage other criminal informers to step forward. Author Peter Maas, who broke Valachi’s story in The Saturday Evening Post, was assigned the job of editing the manuscript and permitted to interview Valachi in his Washington, D.C., jail cell.[10][11]
The American Italian Anti-Defamation League promoted a national campaign against the book on the grounds that it would reinforce negative ethnic stereotypes. If the book’s publication was not stopped they would appeal directly to the White House. Katzenbach reversed his decision to publish the book after a meeting with President Lyndon B. Johnson; an action that embarrassed the Justice Department.[10][11]
And no doubt, a lot of Italians had nothing to do with the despicable mafia, but some did.
Others, were and are not Italian however.
https://en.wikipedia.org/wiki/Hyman_Abrams
https://en.wikipedia.org/wiki/Evsei_Agron
https://en.wikipedia.org/wiki/Moses_Annenberg
https://en.wikipedia.org/wiki/David_Berman_(mobster)
https://en.wikipedia.org/wiki/Otto_Berman
https://en.wikipedia.org/wiki/Abe_Bernstein
https://en.wikipedia.org/wiki/Alex_Birns
https://en.wikipedia.org/wiki/Louis_Buchalter
https://en.wikipedia.org/wiki/Ike_Bloom
https://en.wikipedia.org/wiki/Kid_Cann
https://en.wikipedia.org/wiki/Mickey_Cohen
https://en.wikipedia.org/wiki/Carl_Cohen_(businessman)
https://en.wikipedia.org/wiki/Monk_Eastman
https://en.wikipedia.org/wiki/Waxey_Gordon
https://en.wikipedia.org/wiki/Harry_Horowitz
https://en.wikipedia.org/wiki/Phillip_Kastel
https://en.wikipedia.org/wiki/Harry_Keywell
https://en.wikipedia.org/wiki/Lou_Kravitz
https://en.wikipedia.org/wiki/Samuel_Levine_(mobster)
https://en.wikipedia.org/wiki/Joseph_Linsey
https://en.wikipedia.org/wiki/Seymour_Magoon
https://en.wikipedia.org/wiki/Harry_Maione
https://en.wikipedia.org/wiki/Boris_Nayfeld
https://en.wikipedia.org/wiki/Jacob_Orgen
https://en.wikipedia.org/wiki/Philip_Paul
https://en.wikipedia.org/wiki/Abe_Reles
https://en.wikipedia.org/wiki/Harry_Rosen_(mobster)
https://en.wikipedia.org/wiki/Louis_Rothkopf
https://en.wikipedia.org/wiki/Harry_Sagansky
https://en.wikipedia.org/wiki/Bugsy_Siegel
https://en.wikipedia.org/wiki/Harry_Strauss
https://en.wikipedia.org/wiki/Emanuel_Weiss
>https://en.wikipedia.org/wiki/Jack_Zelig
https://en.wikipedia.org/wiki/Max_Zwerbach
https://en.wikipedia.org/wiki/Abner_Zwillman