What does the pollution in Blade Runner symbolise?

Answer:

A case could be made that the replicants are to be viewed as fallen angels, and Roy Batty as Lucifer(see links below marked "WIKIPEDIA" and "Everything 2"). In this case polution serves to make Earth a hell surrogate as opposed to the heavens above where the replicants came from.

First answer by Dst963. Last edit by Dst963. Contributor trust: 53 [recommend contributor recommended]. Question popularity: 1 [recommend question].