What does it mean when you have a dream about your husband killing your son?

The child that appears in a dream is usually a symbol that represents something about the dreamer. Depending on the context, actions and other details of the dream, that child might symbolize the dreamer's own childhood, or the dreamers' "inner child." That means the part of the personality that is innocent, playful, curious and child-like. In this particular dream, the child gets hurt, which means that the dreamer is being hurt in some way. There is no suggestion that the dreamer causes the child to be hurt, so the injury is coming from someone or something else - the demands of work, perhaps, or the pressure of having to be responsible all the time. The dreamer needs to consider what is causing harm to one's own playfulness or creativity and find effective ways of protecting areas of vulnerability.

It probably means that you should be nice to your child, or that you hurt him/her in some way.