So put Hitler’s paintings on permanent exhibition in a Berlin art museum?

If they’re genuinely good, and contribute to world of Art as whole, why not? It’s not like people don’t listen to Wagner. My guess is that his works are lackluster and have made very little impact in the art world.

Dalí’s work is revered, and, while he didn’t partake in genocide, he was a Francoist ghoul who shouted “¡olé!” at the assassination of his friend Federico García Lorca by Nationalists.