The bible, 

Most people are accustomed to Disney's version of fairy tales, which have had most of the death, dismemberment and other unpleasantries removed.

I would never read Hansel & Gretel to my kids.  Two children, abandoned by a parent end up cramming a live person into an oven.  Sweet dreams! 

Oh my goodness, I never had any children but I don't think I would avoid reading any classic fairy tales. My sister and I read them all when we were little and I think she read them all to my nephew. And maybe it's better for a child to hear classic fairy tales than play violent video games or watch adult television shows?

The one that has Obama in the white house.

worst scare i ever got as a girl was mien kampf

atheist teacher assigned us that book

we had to find excuses to agree with hitler

i asked mom to find me another school

"Change" via Obama.

Lady Darko

I don't know that fairy tales ever gave me bad dreams.  I never believed them anyway.  But some things give me nightmares.

• Network advertising of this that and the other useless gadget, and the terrifying cliche', "But wait . . .!"
• Idiots showing up on the front door trying to sell me vacuum cleaners.
• Idiots showing up on the front door trying to sell me on supporting idiot Democrats.
• Idiot neighbors who form a line trying to borrow my husband's tools (while I stand there with a Ma Deuce telling them, "NO!  Go buy your own you tool moochers!"
• That long and tedious reading of Obama-care.
• The list of bogus promises Obama made and how he refused to keep any of them!
• Assorted nauseating lies from Tadpole.
• Assorted screwball fantasies of possible renewed interest in atheism by Physicalist.
• Jokes that begin with "Knock, knock."
• Accordion sonata of the camp classic, "On top of spaghetti."
• Harmonica recital of  ANYTHING!
• Anything for sale marked, "Ronco . . .."

Some things frighten even tough old broads like me!

The Robber Bridegroom by the Brothers Grimm.

http://en.wikipedia.org/wiki/The_Robber_Bridegroom_%28fairy_tale%29