Deon D. Jenkins knew he wanted to be the president of the United States as an elementary school student in the Bay Area. At that point, there had never been a Black president. Jenkins kept his dream quiet. He said he wanted to go into hip hop or the National Football League, where he thought he could make a difference through speech and protest. “A white little boy can say ‘I can be the president one day’ and not be seen as a someone with a pipe dream,” Jenkins said in an interview. “But if a Black little boy says...