I'm subbed to Dan Bell, who specializes in filming dead malls.
One common denominator with so many dead or dying malls is that they were built in outlying suburban areas and initially attracted an almost exclusively middle-class, white suburban demographic, but then (as always) real estate developers got greedy and began to build Section 8 apartment complexes adjacent to the malls or public transportation that went directly into the inner city was extended to the malls.
This inevitably lead to a decline and an "urban" element (we all know what that means) beginning to shop, thus scaring away longtime shoppers as these malls gained reputations (real or perceived) as being hotspots for crime.
A "legendary" example is the Owings Mills Center in Owings Mills, a once-rural backwater northwest of Baltimore that saw dramatic growth in the '70s and '80s as the formerly Jewish sections of Northwest Baltimore below Northern Parkway underwent a predictable demographic shift and economic decline. Initially popular with the wealthy Jews of Pikesville and Northwest Baltimore who stopped shopping at Reisterstown Road Plaza when it became a ghetto hellhole, the death of Owings Mills was secured in the late '80s when the city extended the controversial Baltimore subway to it. You can kinda guess what happened next...
The Owings Mills area is still a popular retail outlet, but the mall is all but dead now. Ghetto trash killed it and forced it's intended clientele to instead go to the much-safer and in-a-much-better-area Towson Town Center.