One week after September 11, 2001, according to Gallup, 51 percent of the US public felt worried that a family member would become a victim of terrorism. Fourteen years later, the figure was the same: 51 percent. People are almost as scared today as they were the week after the Twin Towers came down.

— Factfulness by Hans Rosling, Ola Rosling, Anna Rosling Rönnlund