@SamAndreas is right. You just cannot see the piece of propaganda for what it is.
Let's start simple:
The "little boy" on the ground who's allegedly being shot with bullets by a drone, does he look like "a little boy" to you? Especially in reference to the bystander in the foreground?
I suppose a drone could be made to shoot bullets but at the moment other than perhaps very large ones I don't think that is being done. Dropping bombs yes, not shooting bullets.
The problem is a gun which shoots bullets is that the gun acts like a pulse rocket engine. Insofar as the flight of the drone is concerned it will cause it to crash.
Shoot the gun, the drone stops moving, falls to the ground. Or shoot the gun and it will cause the control of the drone to be lost. Either way the drone is most likely lost.
I bet it would be real hell trying to get that control back for a drone operator if all it did was strip away the control for a moment. By the time the control could be recovered the drone would be tumbling.