The video was on Monday, Apr 5 uploaded on WikiLeaks, an independent website that allows people to post information that the authorities would wish to keep as a secret.
"WikiLeaks has released a classified US military video depicting the indiscriminate slaying of over a dozen people in the Iraqi suburb of New Baghdad - including two Reuters news staff," the website said on Monday, Apr 5.
The clipping has now made its way to other websites including Youtube. The issue has also gained attention of the internet community as people are debating on the content of the video on popular sites such as Twitter and Facebook.
The editor of WikiLeaks, Julian Assange, has told the media that the video was uploaded by a whistleblower and its authenticity was checked by a group of 'military whistleblowers' before it was made public.
Assange also added that WikiLeaks will be protecting the identity of the person who posted the video.
Now, there is an all-out war between WikiLeaks and the Pentagon with the US authorities dubbing the website as a potential threat to national security.