It is clear that when the gang or ’task force’ had to carry out an operation, they had been given the ’green light’. If any neighbour or caretaker of-the building involved got in touch with the local Police headquarters or with a radio patrol-car asking for help they would be told that the Police were aware of what was going on, but could do nothing.  In order to overrule police authority, the forces taking part in raids would ask for a ’green light’, which they did either by radio,...