How do you change a troubled police department? FRONTLINE goes inside the Newark Police Department — one of many forces in America ordered to reform. As the country’s debate over race, policing and civil rights continues to unfold, the New Yorker's Jelani Cobb examines allegations of police abuses in Newark, N.J. and the challenge of fixing a broken relationship with the community.

From veteran FRONTLINE filmmaker and chronicler of U.S. politics Michael Kirk and his team, this documentary traces the U.S. response to the September 11 terrorist attacks and the devastating consequences that unfolded across three presidencies. This two-hour special offers an epic re-examination of the decisions that changed the world and transformed America.