The Sandy Hook tragedy was performed by actors.
It's difficult for us to wrap our heads around tragedy. In the aftermath of terrible events, we alternately seethe with rage and find ourselves feeling impotent and numb. One way that people manifest the difficult feelings in the aftermath of disaster is to cook up conspiracy theories. Now that we are all plugged into the Internet, dozens of crazy explanations hit the web within hours of tragic events. One common explanation that is absolutely awful is to suggest that tragedies are staged with actors. These theories are pretty easy to throw together. You simply comb actor databases and pair similar looking actors with victims and responders you see on the news. Here is one example of such lazy crackpot garbage.