When, on August 26, Svetlana Alexievich was summoned to the Belarusian Investigative Committee for an interrogation, the grim visit turned unexpectedly celebratory. As the winner of the 2015 Nobel Prize in Literature walked into the K.G.B. building, supporters chanted “Love” and gave her white flowers—a symbol of the colossal protests unleashed by Alexander Lukashenko’s rigged re-election in August.

Alexievich—Belarus’s most well-known writer—was summoned for questioning as a member of the opposition group, the Coordination Council, formed after the elections, and immediately accused by agents of the Belarusian strongman of “inflicting damage to national security.”