Obviously, if a mad man is going to kill his own mother to get guns and kill people, additional laws are not going to stop such a person. This kind of person does not even need a gun if he has decided to commit this sort of crime. In fact, additional laws will only stop law-abiding people from getting laws.
20 years ago gun violence began going down. The reason is concealed and carry laws started being passed. So, 20 years after concealed and carry laws began going into affect, if we look at the cities with the highest gun violence, in most part these cities also have the most draconian gun laws. Chicago, East St. Louis, Oakland, etc.
Now if we look at the history of gun control. It is meant mainly to keep guns out of the hands of minorities and inner city people. These are the people who need them the most.
If we look at every mass shooting over the last 50 years what did they have in common. Except for one, they were all in "gun-free" zones.
There is only one way to stop these type of tragedies. Put people with guns inside of our schools. Some schools keep armed guards, some are training a few of the teachers, some towns keep a police officer on campus. Once it is known that something is in place, people won't even attempt it.
If you would like to read some facts. http://americangunfacts.com/
In ending Mr. Jaco, you are the only "Gun Nut" in the room.