This video leaves too much for conjecture. Unless there is an independent report to go with it, I see no indication that it was the military there that did this. I saw no footage of shots being fired by the French, nor was the crowd in any hurry to leave the immediate area of vehicles. They didn't seem to be showing any great amount of animosity towards the troops as they left the area. If it was the military, were they perhaps protecting whoever was involved with the UN vehicle. There's just too much unanswered to say the French opened up on unarmed civilians.
I'd like to know how you identified the shot as coming from FAMAS. Must be quite a gift. In the future, don't just post something for it's sensationalism. Back it up with some verified fact and comments such as "They blew someone's head off" are both unwarranted and childish. Given the above inconsistencies, I can only surmise you were trying for the biased shock value by proclaiming the it was the fault of the French. You had no business stating so in your title.