The origin of the avant-garde movement is human insecurity due to the crisis of a society divided between traditionalists and revolutionaries right after the decade of 1920, the Great Depression of 1930, and the rise of totalitarian systems, which led to the Second World War (1939-1945). The avant-garde deepens the inner world of the characters, as they are presented through their most hidden states of the soul, owing to a provocative and original attitude, challenging the existing values and models.