Perhaps more representative of the day than this carefully orchestrated symbolic act was what happened outside, as recorded by Brook Packard, the bishop's wife. She was at the front of a crowd of protesters next to the fence when someone tried to snip some of the chain links. She writes at Occupied Bishop.
Big rich institution meets small vulnerable human beings; crunch.
I'm a long way from these events and have no special knowledge of them, but am moved and riveted by their poignancy and drama.