Lajos Kassák (March 21, 1887 – July 22, 1967) was a Hungarian poet, novelist, painter, essayist, editor, theoretician of the avant-garde and occasional translator, was the father of many modernisms.
He was also the first genuine working-class writer in Hungarian literature.
Kassák is considered to be the main father figure of Hungarian Avant-garde, and one of the first poet/writer/artist we had an authentic working class background. His views on historical avant-garde movements influenced the regions perception and artistic production, especially because the journals he edited and published, the Ma / Today and the Tett / The Deed. He was heavily influenced by the international constructivist movement and issued several manifesto: Képarchitektúra / Image Architecture (1922), Vissza a kaptafához / Back to the Basics (1923), A konstruktivizmusról / On Constructivism (1922). Nowadays, since he is very hard to associate with a single style or movement, most art historians refer his work to be an "activist", a special label issued to mirror the socially engaged style of his artistic production.