You described perfectly the outer appearance of the Baghdad compound. Almost a darkened unmanned movie theater ticket box looking affair. Windows to bang on, but seemingly leading to nowhere, and a nearby vehicle gate in the outer wall. But that place is a fortress, being in a perpetual war zone.
This flock of demonstrators, in their current form, with their shirt tails hanging out and a can of lighter fluid are no match for that fortress wall.
I do see what you mean about the receiving areas in embassies being subject to risk when caught on a normal access day.