Tragic events like the recent shooting in Aurora, Colorado can be very disturbing to children (not to mention adults). Because going to the movies is such a common activity for kids, the possibility of something similar happening to them or someone they love can seem all the more real. Even if they are not talking about it, it is very likely that they are thinking about it, especially given the amount of media coverage that they have probably seen and heard.
It is important to talk with kids about their concerns, but it's sometimes hard to know where to begin. Here is a link to a guide for parents from the National Child Traumatic Stress Network - Talking to Children About the Shooting.