I'm continually stunned by how fearless my son is towards media. I keep showing him movies and TV shows that are creepy or scary as eff, and he just shrugs them off. He loves Nightmare Before Christmas. We happily watch Doctor Who together, and he adores the Daleks.
So there are those "serial killer" thoughts. But he's also so loving and gentle with smaller kids. Super sensitive at tights.
As long as he can separate fantasy from reality, there's no real issue in my inexperienced and uneducated opinion. It's the ones who start mixing fantasy with reality, or who have no real world reaction to tragedy, that are the ones to worry about.
