Roughly between 1945 and the late 1980s, and particularly between 1956 and the 1970s, the Polish poster saw a kind of eruption of originality and individual talent, since the 1960s, called internationally as the Polish School of Poster, occurring parallel to the other new waves in Polish film and applied arts. After the war, Poland had to redefine itself, as it had become a new country, in every possible sense: rebuilt from the destruction by the Nazis and through the imposition of communist ideology. This meant the rejection of the old pre-war bourgeois mentality for the sake of a new equality and the dominance of a Party-led working class culture. The arts, of course, were valued by the communist authorities as an element of building socialism.