I don't blame guns, but I do blame people having access to them. Humans are irrational, illogical, and emotional the harder we make it to murder each other the safer we are.
If you really believe this then you need to arm yourself first, this will make it harder for some irrational, illogical, emotional jerk from killing you.
I really believe so many people think outside the bubble. It is like watching the news, people watch it and they come away thinking they actually know what really happened, then they start with their idealistic thoughts like, "If that were me I would of done this or that...".
Think about the Zimmerman case, there are two people who really know what happened that night and one of them died. Personally I believe Zimmerman should of been guilty of at least manslaughter, but there you go: who am I to say, I don't really know what happened. But from the sound of it I can't really blame Trayvon for being defensive under the circumstances. But anyway, the media had this case pinned as being racially motivated from the get go (not to mention that Zimmerman was guilty as sin). This caused a lot of public discontent, which was hugely irresponsible to say the least. Lesson learned: the main stream media is about as biased as it can get and can not be trusted to give plain simple information 99% of the time.
Now the old man in the theatre? From what I have HEARD he will probably get his, but I don't know. If the popcorn assailant said things like, "I'm going to kill you old man!", then the old man may have been justified. This type of random social behavior happens all the time, look at road rage. But Popcorn itself is not a deadly weapon last time I checked. Well I take that back, have you ever eaten the popcorn some theatres serve? That artificial butter is the worst.
So anyway, I guess what I am trying to convey to anyone who will listen is: the world begins and ends in your own immediate vicinity. Getting caught up in events which you have no practical knowledge about beyond hearsay will only cause you unwarranted grief and stress, and usually ends with uninformed opinions.
As far as gun control is concerned, this only means having a steady aim. The only entity you should put your faith in regarding your right to bear arms is yourself. Allowing someone else to make this decision for you, at least in the USA, is irresponsible and dangerous, especially considering the well understood fact that the criminals have them, and they don't give a crap about your laws or liberty.
And you can take that to the bank.