CHARLESTON, S.C. (AP) — Doc Rivers is at ease using his platform as an NBA coach to fight bigotry and racial injustice, campaign for politicians he believes in and advocate for social change on themes ranging from poverty to police brutality. Sometimes, his speeches sound like they were delivered by someone running for office. Might the 60-year-old Rivers, the son of a Chicago police officer, someday stump for change as an actual politician? “Oh God, no. I wouldn’t win, number one,” Rivers said. “And number two, that’s not what I want to be.” Rivers is fine with wading into political...