Fighting the Sandy Hook Lies

"You are entitled to your own opinions but not your own facts."

A battle currently pits parents still mourning the loss of their children in the Sandy Hook school shooting against purveyors of the most mean-spirited and outlandish of myths. 

1) What are the lies about Sandy Hook?

2) Why do conspiracy theories like this persist?

3) Why are these lies so painful to parents of the deceased?

4) Is the Sandy Hook Conspiracy Theory the only one?  List 5 more.

5) What steps can we take to fact check conspiracy theories?