A domestic surveillance system established after the terrorist attacks of September 11 collects and shares intelligence on a mass scale about “the everyday activities of law-abiding Americans, even in the absence of reasonable suspicion,” according to a new report.

 

The report, released this month by the Brennan Center for Justice, a nonpartisan policy institute at NYU School of Law, found that law enforcement data sharing programs organized by the Department of Homeland Security (DHS) are fraught with waste and abuse and have whittled away at civil liberties protections while evading sufficient oversight.