When viewed backwards...

If you watch Sleeping Beauty backwards a prince brings a witch back to life to take his girl and trap her in a tower for 100 years.

If you watch Cinderella backwards it teaches women their place.
 
If you read the new testament backwards it's about a guy who comes down from the heavens and starts blinding, killing and hacking poor people's limbs away, until he gives stuff to magic men and rides out in a ufo.
 
If you watch the Dentist backwards, an insane person revives dead people while becoming an ordinary Dentist.