Re: 'normalization of gun ownership'. I used to have a stalker. I had a gun during that time. He wasn't very focused on me, so moved along (THANK GOD). Also, I moved, so that helped.
I do not have a child. If a child ever came to my house, I unloaded the gun and hid it and its ammo in two separate, difficult to access places even though the child was never unsupervised anyway. The few times I carried my gun, I was not at all casual about it because I was fully aware it could kill someone. I never took it to Walmart, but if I had I would not have let go of my purse for even one second. I would have my money and keys in a totally separate location so I could pay and get into my car without opening the temporary gun safe.
Anything that can kill someone (and this is a long list of items including some things that are alive) MUST be handled carefully. I think some people forget that. If a person is busy and does not really, really need that thing then they should probably get rid of it (I guess a gun could be stored in a safe, if a person chose to do that). If a person chooses to keep the whatever it is, then they have to make safety in regard to it a very high priority I do not care if they are busy.
I do not think we have a 'normalization of gun culture', I think we have people not paying attention and not understanding that if you're not vigilant you MUST give something up. It is your choice what that is... it could be the lethal item or it could be some convenience you choose to sacrifice.
One thing is people DO steal purses out of carts. So, her decision to set her purse in her cart was a bad one even if the two year old hadn't been there.
I don't understand the hair triggers on these guns though. My gun was a Colt. Their triggers are stacked (it gets harder to pull the further back you pull it). I don't know if I two-year-old could have fired it.. I never let anyone younger than adult touch it. I thought Colts were pretty popular, but maybe not. You can get an action job, but my father advised me not to, so I didn't.