Now, DRRLP - in and of themselves these items don't point to any particular cultural group:
Nascar memorabilia
Garth Brooks CD box sets
Dress jeans for funerals and weddings
Confederate Flags
A non-running car in the front yard
No screen door on the trailer
Your kids wear only Pampers or Luvs to the WalMart
As I say, individually they don't mean anything....but if you add them all up, said person is probably white trash.
Although DRPENNYO's post is correct, it has nothing to do with income or social position.