Erica Garner’s coffin outside the First Corinthian Baptist Church in the Harlem neighborhood of New York, Jan. 8, 2018. Garner, who was 27 when she died on Dec. 30, built a reputation as a relentless fighter when she started a campaign against police brutality that gained nationwide attention after the death of her father, Eric Garner, in July 2014. (Demetrius Freeman/The New York Times)