Trial Opens for Former Officer Who Killed Unarmed Black Man in His Apartment

DALLAS — Botham Shem Jean posed no threat to the off-duty police officer who shot and killed him as he was watching television in his Dallas apartment last year, and in the final startled moments of his life, he had no chance to tell the officer she had entered the wrong apartment, a prosecutor told jurors on Monday, the opening day of the officer’s murder trial.

The former officer, Amber R. Guyger, 31, was returning home from her patrol shift in September 2018 when she entered what she said she...