A man at a vigil this week wears a mask with the words “I can’t breathe” above the name of Manuel Ellis, a 33-year-old black man whose death in Tacoma, Wash., police custody was recently ruled a homicide.

A man at a vigil this week wears a mask with the words “I can’t breathe” above the name of Manuel Ellis, a 33-year-old black man whose death in Tacoma, Wash., police custody was recently ruled a homicide.