[above image is from here]
Below is just the artwork, without John Lennon and Yoko Ono standing by it.
It is a piece by the artist George Maciunas, who was part of what has been termed the Fluxus Movement. Yoko Ono was among the few women who were part of this movement. She has gone on to do many other creative works, in many media.
Flag poster designed by George Maciunas; it measures 54.8 x 87.8 cm. [this image was found here]
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