After the war etching became Kirchner's favorite medium. He attributed this to its responsiveness. 'Etchings', he wrote, 'develop in the first states… - Ernst Ludwig Kirchner

Quote from 'Ein neuer Naturalismus? Eine Rundfrage des Kunstblatts', in 'Das Kunstblatt' 9, 1922; p. 375

Here we have been hearing terrible rumours about torture of the Jews [by the Nazis] , but it's all surely untrue. I'm a little tired and sad about the situation up there. There is a war in the air. In the museums, the hard-won cultural achievements of the last 20 years are being destroyed, and yet the reason why founded the Brücke was to encourage truly German art, made in Germany. And now it is supposed to be un-German [Degenerated Art / Entartete Kunst]. Dear God. It does upset me.

They [his 'Street Scene' paintings and drawings,he made in Berlin] originated in the years 1911-14, in one of the loneliest times of my life, during which an agonizing restlessness drove me out onto the streets day and night, which were filled with people and cars.