Over the course of Kobe’s 20-year-long career, he remained consistently silent on political issues, in a way that by the time of his retirement seemed wildly anachronistic. Bryant’s apolitical attitude reflected the individual-focused, Jordan-era status quo in which he entered the league, but it eventually made him out of step with his younger counterparts, who have largely taken up the activist mantle of older icons like Kareem Abdul-Jabbar and Oscar Robertson. Today’s NBA stars are eager not only to use their platform to amplify political and social causes, but to establish activism as a responsibility in its own right, as...