Any reason you're singling out Inglourious Basterds in particular?

In general, though, I do not believe that this problem is at all limited to the kind of art that we commonly dub as "fiction". For example, in the 19th century, travel diaries of colonial "explorers" were a very popular form of literature consumed by the educated classes in the colonial metropole, and they consisted almost entirely of distortions, willful or accidental omissions and often outright lies. Yet, they helped shape the view the West has of "oriental" cultures and peoples, with many of these cliches persisting even to the current age (i.e. "Orientalism").

Therefore, following your logic, all scientific works are damaging.