Didarul Islam and three others were killed when a gunman came to a Midtown skyscraper. The suit says the building had few physical barriers and lax surveillance.

© Hiroko Masuike/The New York Times

The Bondi Beach massacre has people fearing more anti-Jewish violence — and an Islamophobic backlash. But there are reasons to think stability will prevail.

© Matthew Abbott for The New York Times