My supposition is that these are works by artists Hitler detested. I doubt they are the very works displayed during the famous "Degenerate Art Exhibition" of 1937. Scroll down at webpage.The Justified episode I'm watching right now surrounds purported paintings by Hitler. Here's one he actually did.
Vienna State Opera House, Adolf Hitler, 1912
It is said (in real life) that he was somewhat skilled technically, but lacked creativity, feeling, and couldn't draw faces..