Trying to strike a balance between fact-based atrocities and “fun horror escapism” can be a dicey proposition. A film really skirts the line on bad taste if it starts to exploit actual murders, rapes, and wartime atrocities in a framework that genre fans may also describe as energetic, kinetic, and entertaining.
Film4 Frightfest 2012
Many a worthwhile medical thriller has been presented as a crafty morality tale. For example: would you give a person cancer if you knew it would cure cancer? What if it was a hundred people? And what if the results were … pretty certain, but not guaranteed?
In most horror films that deal with the apocalypse, the “end of days” is just a stark and effective setting for zombie (or other monster) attacks, but once in a while you come across a film that is actually fascinated by the horribly sobering concept of… the end of civilization.