It all seems incredibly naive and smacks of fear and lack of spine by the head shed.
I wonder what message this is sending.
Image the above with the alternative. The rioting starts, they swing loose their shields and stand firm, protected from the missiles.
Don't you know? Defensive equipment is deemed threatening.
There's a reason why its called the ministry of Defence, not the Ministry of War, or the Minsitry of Remember Zanzibar.