CLEAN : Art stolen by Nazis found in Germany

The video discusses the discovery of a significant collection of Holocaust pictures, highlighting the challenges in selling such art due to ethical concerns. It details an investigation into a dealer suspected of selling looted art, leading to the recovery of numerous artworks, including pieces by Picasso, Renoir, and Matisse. The video explains how the Nazis looted art during WWII for currency or museum collections. It emphasizes the importance of vigilance in the art trade to prevent illicit sales and ensure artworks remain in legitimate markets for the future.

How does the text suggest preventing looted pictures from entering the legitimate market?

What is the long-term goal mentioned in the text regarding the art trade?