I think Mr. Goldberg has it partially right. I disagree with more gun laws, this wouldn't stop tragedies like this from happening. The other part, dealing with the mentally ill who may resort to violence is what's needed in this country. Too few mental institutions, many of these mentally ill on the street need treatment in mental hospitals. They need help and some people, like this murderer, needs treatment and needed to be in a mental institution and not out on the street.
Also the media and video game manufacturers, need to be more responsible. Fewer violent video games and fewer violent movie and tv shows would help too.