1. “It was meant to be a dream, not a nightmare.”

Britain was in mourning after the deadliest terror attack there since 2005, at an Ariana Grande concert filled with her excited young fans and their families. Above, a vigil in Manchester.

An 8-year-old girl, Saffie Rose Roussos, was among the 22 dead, and more children were among the 59 injured. A 22-year-old British man whose parents came from Libya, Salman Abedi, was identified as the suicide bomber, and the Islamic State claimed his attack.