how does the author use diction in the 2nd paragraph, particulary his use of the phrases "parochial snobbery" and "Salem folk"?

This is from the narrative at the beginning of the Crucible. Miller mentions “parochial snobbery” as one of the reasons the Puritans failed to convert the Indians. It is this same theocratic fanaticism that Miller goes on to describe "Salem folk" with.