The term "Degenerate Art" refers to art that was deemed "un-German" or Jewish by Nazi censors. In 1937, they had a 650 work art exhibition full of works that "insult German feeling, or destroy or confuse natural form or simply reveal an absence of adequate manual and artistic skill." Two million people, including Hitler, attended this exhibition as it toured the cities of Germany.

This reminds me of Socialist Realism, except Soviet artists were sent to Siberia for offending the censors, not publicized in a gallery.

Are there other examples of a government displaying "unpopular art" for propaganda or nationalism, or is this approach unique to 20th century totalitarianism? Is there anything like this exhibition in art history, at this scale, outside of Nazi Germany?