The film L’Argent (1983) is about how far people will go to get money (l’argent en francais). One major problem with greed is that people who are enthralled by it will go to virtually any length to get money. Even a religion can unconsciously warped to separate greed from earning and having wealth. Historically, Christian thought on greed and wealth has shifted from anti- to pro-wealth. Whether enabled by their religion or not, greedy people will think nothing of other people being hurt in the process. Hence, greed can be reckoned as selfishness incarnate. To claim that money is God not only puts a lower good above a higher one, but also manifests self-idolatry.
The full essay is at "L'Argent."