Gun Culture 3.0
Gun Culture 1.0
You might know exactly what this is because you've likely seen it or heard of it. This is why they say not to go hiking on hunting grounds in case someone shoots at movement. A product of this culture is street signs with bullet holes in them - no big deal unless you take a moment to think about what their backstop was (or wasn't). Picture the stereotypical "gun fudd." Where is their finger? What do they say when you point out that they just pointed their gun at you? That's enough about Gun Culture 1.0.
Gun Culture 2.0
Ok, we're starting to get there. This is a widely-accepted term to describe firearm owners who recognize the virtue in training and learning. People who attend more than the basic CCW class, people who compete in shooting sports, people who understand the need for empty-handed skills and carrying less-lethal tools - these are who make up Gun Culture 2.0.
Gun Culture 3.0
This term isn't locked down yet. As of this writing there are few examples of the term to be found on the intertubes, but there certainly is a new culture developing in the firearm world. More and more people from historically marginalized communities are becoming firearm owners. They have not been welcomed with open arms, and that might eventually become a good thing. Because of the poor treatment people have come to expect, they've started opening their own gun shops, creating their own gun clubs or shooting matches, becoming firearm instructors, and creating a separate, better gun culture that seeks few of its answers from the old cultures.