Complex sentence: In 1993, the mural came back into the news when a janitor at the post office claimed the nudity of the figures rendered the scene pornographic and filed a union grievance; while his complaint was being reviewed, the painting was shielded from the public by blinds.
Split into simpler sentences: In 1993, the mural came back into the news when a janitor at the post office claimed the nudity of the figures rendered the scene pornographic and filed a union grievance. While his complaint was being reviewed, the painting was shielded from the public by blinds.