I see you, Margaret Atwood cameo.
Margaret Atwood makes a cameo in the pilot episode.
She's the character who slaps June for not initially blaming another character for being raped.
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The red outfits that the Handmaids wear in the book and TV adaptation are a nod to Mary Magdalene, a repentant sinner in the Bible.
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Whereas the blue that the wives wear is meant to be a nod to the virgin Mary, and how she's often shown in art as wearing blue.
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If you're wondering about those names, "Offred," "Ofglen," "Oferic," the Handmaids' names denote which Commander owns them. (So, "Offred" is "of Fred," for example.)
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via BuzzFeed/Travel
