Moment unarmed protester confronting Egyptian tank is 'gunned down' as 91 die on day of rage and vigilantes clash with police

As deadly clashes between government forces and supporters of the Muslim Brotherhood continued in Egypt Friday, a disturbing video has emerged that appeared to show the military firing on unarmed demonstrators.
The footage clocking in at just under a minute was uploaded to YouTube August 16. The caption written in Arabic read: 'The army shoots on peaceful protesters in Ismailia.'
Ismailia is a city in northeastern Egypt, where Reuters reported that four protesters were killed Friday during a 'Day of Rage.' 
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Day of rage: A disturbing video was uploaded to YouTube Friday showing what appears to be a clash between peaceful protesters and army tanks in the city of Ismailia

Under fire: About 30 seconds into the video, rapid gunfire erupts, prompting some of the protesters to drop down to a crouch and others to flee

It has not been established if the four deaths confirmed in Ismailia are related to the events depicted in the video.
NBC News foreign correspondent Ayman Mohyeldin tweeted that the news agency Storyful had confirmed the video's authenticity.
A YouTube user by the moniker ahmedkhtr wrote in the comments section, apparently referring to one of the protesters who was allegedly shot in the video: 'He is my friend. His name is Ahmed Hachim one of the best guys ever he is a communication engineer, had a family son&daughter.’