Mira Nair, the acclaimed film director and mother of Zohran Mamdani, in Amritsar, India, in March.

Tear gas and smoke at a protest in Nairobi, the Kenyan capital, on Wednesday. As demonstrations flared, banks and businesses in the center of the city were closed amid a heavy police presence.

Nairy Baghramian in her Berlin studio. “A vertical swimming pool doesn’t exist, but I would like to swim in it,” she said. “There’s no such thing as a horizontal staircase — but I would like to imagine it.”