The 9/11 Generation Comes of Age

It’s always difficult to determine precisely when an epochal event makes the transition from memory to history, but 2019 may well mark that moment for the terrorist attacks of Sept. 11, 2001.

This week’s 18th anniversary can be seen as both the legal coming-of-age of the cohort born in the wake of al Qaeda’s assault and the generational passing of the torch from the children of the Cold War to the children of the war on terror. This fall, college students born after 9/11 began arriving on campuses across the...