The progress from Western colonial global expansion, and the construction of American wealth and industry on the backs of enslaved Blacks and Native peoples, followed by the abrupt "emancipation" of the slaves and their exodus from the South to the Northern cities, has led us to our current divided society. Divided by economic inequities and unequal access to social resources, the nation lives in a media dream of social harmony, or did until YouTube set its bed on fire. Now, it is common knowledge that our current system of brutal racist policing and punitive over-incarceration serves the dual purpose of maintaining racial prejudice and the inequities it justifies. Brief yourself on this late-breaking development in American history here.