From the ACLU’s Tracked in America website:
The targets often are those with the most precarious standing in the country: minorities and new immigrants. Ironically, it is the struggle of the people on the fringes of society that has strengthened the civil rights of all Americans.
Tracked in America introduces the stories of 25 individuals who have been targeted by the U.S. government. The stories span from World War I to the post-9/11 world. Six eminent historians provide historical perspective and context to the time periods in which these individuals were under surveillance. Together, the profiles convey the courage of these individuals and reveal a dangerous pattern of government surveillance.
More here.