folk memory 
noun
A recollection or body of recollections of the past that persists among a particular group of people.Here folk memories of James have been developed and exploited in the advancement of libertine values....
- I doubt Ms Rowling read Ginzburg before inventing Harry Potter, so we must be looking at a folk memory re-emerging periodically along highly structured symbolic axes.
- Scots seemed chiefly preoccupied with the folk memory of the Clearances.
- in the long run
- in the main
- in the making
- in the mass
- in the matter of
- in the melting pot
- backscratcher
- backscratching
- back seat
- back-seat driver
- back-seat driving
- backsheesh
- backshift
- backside
- backsight
- back slang
- backslapper
- backslapping
- backslash
- backslide
- backslider
- back someone into a corner
- back something up
- backspace
- backspin