Mainstream is, generally, the common current of thought of the
majority. It is a term most often applied in the arts (i.e.,
music, literature, and performance). This includes: As such, the
mainstream includes all popular culture, typically disseminated
by mass media. The opposite of the mainstream are subcultures,
countercultures, cult followings and underground cultures.
Additionally, Mainstream is sometimes a codeword used for one's
own actual ethnocentric or subculture point of view, especially
when delivered in a culture war speech. Religiously, the
mainstream specifically includes those in the majority opinion
of theology specific to one's faith or denomination. For
example: Those within Christianity who believe "Jesus Christ (to
be) the literal Son of God and co-equally divine with God" would
be viewed as the mainstream or majority opinion within
Christendom; while those who held that the Messiah was a human
prophet sent of God woul...