Police Killed Their Sons. These Mothers Are Fighting for Reform.

In May, Kadiatou Diallo sat in her home and watched an early version of “41 Shots,” an episode of a Netflix true-crime series about the 1999 killing of her son, Amadou, by four white police officers in New York’s Bronx borough.

She said she fell into a “very emotional stage” of mourning that lasted for several days.

“I realized I didn’t grieve…