Generally speaking you still don't see people walking around with them. Responsible owners typically have them in a case when they are heading to the range, going hunting, etc. The idiots you see on youtube walking down the streets with one are just that, idiots. Trying to make a "statement" that usually ends up scaring people and having the police show up.
I don't know about freer access to them but generally speaking the biggest thing that has changed is society. We would play similar games when I was young but we both knew it was just that, playing. We knew that it's wrong to shoot people. You see the stories every day as I do, we live in a world that eats laundry pods and idolizes Honey boo-boo and the How bow dat girl. Reality TV is a bunch of people encouraged to act their worst for ratings and the media sensationalizes violence. The people that we make fun of on here because they are morons are the same people the younger generations are growing up emulating to be cool and popular.
As said by the teacher in this story, parents simply aren't involved with raising their kids anymore, some of my friends are just as guilty, they want to be the kids best friend and the kids are being raised by what they see on the modern babysitter (TV).
One friend of mine in particular is exactly like this teacher says, The teacher calls her with an issue and she goes postal on the teacher convinced that Teach has it out for her kid and is treating him unfairly. Same girl I invited to the island over the summer so she could have a cheap vacation with her kids. She brought her (uninvited) fling of the week with her and spent the whole weekend wasted on vodka, fucking him while the kids sat in front of the TV and basically survived on junk food for breakfast, lunch and dinner. her poor little girl woke up every morning and put on her bathing suit to go to the pool like mom promised and day after day mom woke up hungover and broke that promise. I spent more time with them than she did. Took the 12YO boy exploring around the island and ended up spending half the afternoon with her daughter at the pool on the last day they were there.
Wow, that kinda turned into a rant, eh?