It has been quite a sad tragedy. My heart goes out to every one who's suffered from this.
I think for many of us, our minds race to figure out how we can prevent such events from happening in the future, some wish to assign blame. I don't think the answer lies in blaming media or guns.
Perhaps there is a more humanitarian way of making the world a little better and safer. In much of our culture, there is a stigma put upon those who suffer from mental illness, that stigma extends to those who seek help for it, that compounded with the costs of mental health services can be a deterrent for those who would benefit from therapies and medications that are currently unavailable to them.
I was thinking about this, because its not exactly common for people to run out and randomly hurt and kill other people, it rather indicates that there's a deeper issue which needs to be addressed.
Two things I think would help, and would be good to work toward either way:
1) Working to lessen and abolish the stigma surrounding people with mental issues or illness
2) Making therapies and medications more readily available to the average person.
Just my two cents.