The cycle of police violence and protest in America has so often been told as a story of white officers shooting Black men that three words — "Black lives matter" — stand as global shorthand.
But the death of Tyre Nichols has challenged the narrative.
The 29-year-old FedEx worker — who died after being pulled over by Memphis, Tennessee, police and Tasered, pepper-sprayed and severely beaten — was a Black man. So are the five police officers charged with murdering him.
