Okay kiddo, you know how some people aren't very nice and they like to hurt others? Unfortunately, a long time ago some people called Nazis were like that. They wanted to hurt certain groups of people, like Jewish people, because they thought they were better than them.
Now, some Nazis liked to make art. Art is when you create something beautiful or meaningful using your imagination and creativity. But their art was very different than the art we might make or see today.
Nazis wanted their art to show how great they thought they were and how bad others were. They made art showing things like strong, perfect-looking people with blonde hair and blue eyes (which was how they thought the "perfect" person looked), and they also made very sad and mean art making fun of people who they didn't like.
Even though some people might say the art is pretty, it was made by people who did really bad things and didn't care about other people's feelings. So, it's important to remember that just because something looks nice, it doesn't mean it's good.