Editor's note: Sally Kohn is a progressive activist, columnist and television commentator. Follow her on Twitter @sallykohn. The opinions expressed in this commentary are solely those of the author. The protesters in Ferguson, Missouri, want justice for the unarmed black teenager shot and killed there by a police officer. But the protests also reflect broader patterns of racial injustice across the country, from chronic police violence and abuse against black men to the persistent economic and social exclusion of communities of color. In one sense, the unrest in Ferguson might be calmed if the government would simply release all the...