What objects are covering "every available space" (101) within the old theater now used as the Memory Police headquarters?

When the narrator gets to the old theater where she knows the Memory Police have established their headquarters, she describes the interior to the reader. Among other details, she explains that "every available space--next to the elevator buttons, over the telephone on the wall, on the pillars under the staircase" is "hung with pennants emblazoned with the insignia of the Memory Police" (102). This detail heightens the feeling of suspense within the reader, for the Memory Police are known to be agents of destruction and absence.