The above doesn’t always work. You need to ensure the gates can’t be crowbarred off. Happened to us a few times. The amount of IQ allocated to breaking in is amazing. Serious innovation on the criminal side. Think of your smartest friends very keen to get into your house and working together for years on how to do it.
The kids who make it through all that to e.g. get a job in a bank are absolute heroes.
The righteous fury of those denied the dignity of land and agency burns a cultural brand into the skin of the body politic, an endemic disregard for the "rules-based order" that orders them to the back of the line (however it's said and whoever has the megaphone). The people who benefit, only willing to provide an an ounce of the pound of cure necessary, mask-and-hazmat-suit-up to weather the plague they wrought. It looks ridiculous because it is.
https://www.aljazeera.com/features/2014/5/13/oscar-pistorius...
If the neighborhood is safe, the barbed wire would be unnecessary to make the home protected and safe. Not really sure why the distinction is necessary. In your South African's take, what happens when you leave the protected and safe property. To me that means you are stepping into an unsafe neighborhood.
Barbed wire isn't widely used for security anymore, so it's mostly just on farms, and around here it's usually supplemented by an electric fence. In fact, half our fences at home were just a single length of barbed wire at the top with regular fencing wire for everything else.
It also don't think crime stats went up much over the last decades in general (may be different in specific neighborhoods), but there is definitely more fear of safety that leads to more security.
That said, you’re a little out of date on SA - violent crime across the country was relatively stable for a decade or two, but since 2021, violent crimes across SA have spiked, and now even Cape Town is in the 20 most dangerous towns in the world, and in the top 10 murder / capita towns in the world.
None of this has anything to do with semiotics. I was expecting the exact same thing as you -- semiotics would be about what does seeing barbed wire in specific spaces/contexts mean to different groups of people?
What are its associations with prisons, compounds, neighborhoods, safety, security, the state, private security, militarization, crime, farming, cattle, trespassing, the American West, freedom to roam, and so forth? When you see barbed wire, does it make you feel safe or nervous or scared? How does that change if it's in a residential neighborhood vs. around a military base?
Your experience in South Africa is a perfect example -- thanks for sharing.