Jon Stewart addresses cover-up of toxic air after 9/11: 'Everyone knew'

Comedian Jon Stewart joined New York City Mayor Zohran Mamdani's announcement that his administration will release more than 170,000 pages of documents shedding new light on the air quality around Ground Zero in the months following Sept. 11, 2001.

Comedian Jon Stewart joined New York City Mayor Zohran Mamdani's announcement that his administration will release more than 170,000 pages of documents shedding new light on the air quality around Ground Zero in the months following the Sept. 11, 2001 terror attacks.