Hello. Just a polite heads-up that the flags in this image are nonsense.
The black-red-gold colors of the German republican movement were hated and forbidden by the Nazis, so there is no way they could have been present at a book burning. Furthermore, the colors are upside down in the image, which is a display that has only become common amongst German "sovereign citizens"/Reichsbuergers in the last decades and was certainly not in use in before. Third, the swastika on Nazi flags and armbands was rotated by 45 degrees, so all of these are wrong, too.
Just in case anyone seeing this post cares about stuff like that.
This image pretending to be a historical painting also seems to exist only in the world of stock photo aggregators. At least i could not find a source besides these.