"With “Mend Piece for London” at Whitechapel Gallery (through January 2, 2022), Yoko Ono is reviving an interactive installation that she staged in London more than 50 years ago. Upon entering, you’ll find broken pottery fragments, glue, scissors, tape, and twine on two white tables, plus instructions from the artist: “Mend carefully. / Think of mending the world at the same time.”"