EXAMINING THE ETYMOLOGY of forager reveals that the word has evolved to convey starkly distinct meanings. It appears in fifteenth-century English to describe someone who roves in search of sustenance; a century earlier, the Old French foragier referred to a plunderer. This slippage befits Foragers, 2022, Jumana Manna’s most recent film and the centerpiece of “Break, Take, Erase, Tally,” the Berlin-based Palestinian artist’s current midcareer survey, curated by Ruba Kartrib, at MoMA PS1 in New York. With a runtime of just over an hour, Manna’s work follows Arabs who wander fields picking herbs,