He’s a German Expressionist from the Modernist period, and in this painting he focuses on prostitutes in the middle of a street.
I just really want to go to Berlin, you guys! Berlin is overwhelmingly atheist (like more than 90%). Not that I don’t enjoy dreary moods or grey weather, but this city needs some juice.
Potsdamer Platz, Berlin by Kirchner, 1914
The Dirty Palette 
Thanks for posting this. I hadn’t heard of him but I like his style.