Nothing could be further from the truth. Since you seem to want to know what I want, I'll tell you. I want guns sensibly regulated. It really is no big thing. It is made a big thing by dopes like you that equate any regulation with "a total ban on private gun ownership". That is stupidity supreme.
Registration nationally, trace guns used to kill back through every owner until you get to the one that put it in the hands of the outlaws and lock them up and throw away the key, or else make them an accessory to the murder. That is sensible.
In typical fashion you're too embarrassed by your own ignorance to answer the question. Maybe you didn't understand it.
Which of the things you listed would have prevented yesterday's shooting?
Is that too difficult for you? Man up and grow a pair.