CNN Special Investigations Unit S2007 E25 The Noose: An American Nightmare

Kyra Phillips reports on an upsurge in incidents in which nooses are displayed in an attempt to intimidate black people. Included: the historical significance of the noose; insights from historian James Allan and the Southern Poverty Law Center's Mark Potok; investigating hate crimes in Nassau County, N.Y.; what Philadelphia educators teach students about racial intolerance in America's past.