africanamerican africanamericans africanamericanteenagers blacklivesmatter children'sfiction emotions feelings fiction juvenilefiction nationalbookawardslonglist newyorktimesbestseller nyt:young-adult-hardcover=2017-03-19 people places police-communityrelations policeshootings prejudice racerelations racism socialissues socialthemes teen unitedstates witnesses youngadult youngadultfiction