Underground culture, or simply underground, is a term to describe various alternative cultures which either consider themselves different from the mainstream of society and culture, or are considered so by others. The word "underground" is used because there is a history of resistance movements under harsh regimes where the term underground was employed to refer to the necessary secrecy of the resisters.
In the Esquire magazine (1958),[3] Jack Kerouac stated:
The same thing was almost going on in the postwar France of Sartre and Genet and what's more we knew about it—But as to the actual existence of a Beat Generation, chances are it was really just an idea in our minds—We'd stay up 24 hours drinking cup after cup of black coffee, playing record after record of Wardell Gray, Lester Young, Dexter Gordon, Willie Jackson, Lennie Tristano and all the rest, talking madly about that holy new feeling out there in the streets—We'd write stories about some strange beatific Negro hepcat saint with goatee hitchhiking across Iowa with taped up horn bringing the secret message of blowing to other coasts, other cities, like a veritable Walter the Penniless leading an invisible First Crusade—We had our mystic heroes and wrote, nay sung novels about them, erected long poems celebrating the new 'angels' of the American underground—In actuality there was only a handful of real hip swinging cats and what there was vanished mightily swiftly during the Korean War when (and after) a sinister new kind of efficiency appeared in America, maybe it was the result of the universalization of Television and nothing else (the Polite Total Police Control of Dragnet's 'peace' officers) but the beat characters after 1950 vanished into jails and madhouses, or were shamed into silent conformity, the generation itself was shortlived and small in number.
Moreover, the ease of access to cultural products online has blurred the lines between underground and mainstream. Consequently, what was once considered "underground" is now often integrated into popular culture, resulting in a loss of the exclusivity and community that originally defined these movements.