Young people attend a political rally before the recent Jefferson-Jackson dinner in Iowa. Energizing young voters may be a challenge for presidential candidates ahead of 2016.
A protester stands in front of police vehicles with his hands up during a demonstration in Ferguson, Mo., where in August 2014 a white police officer shot and killed an 18-year-old black man.
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Host Michel Martin poses in the Tell Me More studio at NPR headquarters in Washington, D.C. Although the show is ending, Michel says there are "many stories yet to tell."