Both the beatniks and the Lost Generation were disillusioned with societal norms and felt alienated from mainstream culture, with the Lost Generation's disillusionment stemming from the aftermath of World War I and the beatniks' from the conformity of the post-World War II era.
shorter
Both the beatniks and the Lost Generation were disillusioned with societal norms, with the Lost Generation's disillusionment stemming from World War I and the beatniks' from post-World War II conformity.