Five must watch documentaries on 9/11 terror attacks

The 9/11 attacks were one of the most shocking and brazen terror attacks in the history of world. September 11, 2001 was the day when thousands of innocents where killed and humanity was shamed. The four coordinated terrorist attacks by the infamous Islamic terrorist group al-Qaeda on the US symbolic landmarks literally shook the world. Fourteen years later, let's take a look at some of the iconic documentaries unfolding the mysteries, conspiracies and rumours surrounding 9/11 terror attacks: