Depends on what "ban" means. Some propaganda material shouldn't be allowed to be displayed publicly, but I'm against banning distribution or viewing. I am very much for the freedom or art, even moreso than freedom of speech. Art for art's sake is not dangerous in any way unless it's politically motivated and weaponized as such. Art can be offensive and art should definitely be allowed to be offensive. Art does not and should not have to adhere to mainstream sensibilities.
In the end as with everything it's about intention. Even art used in propaganda is not to be banned if not used for propaganda.
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