A man passes a mural by Jarrod Grech of Ahmed al Ahmed, the hero who was filmed tackling and disarming one of the attackers in the Bondi Beach mass shooting, in a Melbourne laneway on December 22, 2025. | William West/AFP via Getty Images One of my favorite books is Larissa MacFarquhar’s Strangers Drowning: Impossible Idealism, Drastic Choices, and the Urge to Help. The book is, in part, a study of people who take altruism so seriously it starts to look almost alien to the rest of us — the kind of people who donate to others the money they “should” be saving for themselves, who give th...

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