The bottom line is that people who do things like this are evil and insane. No amount of legislation, regulation, or discussion will make any difference...
The only answer to a gunman is another gunman, if you will, who works within the law. That's us, folks
I totally agree with you, Ben. Maybe it's time to seriously confront the matter of having locations where guns cannot be legally carried, as they seem to chosen as target areas by those crazy folks.
A legal carrier at least stands a chance of terminating the violence when it might continue otherwise.