20 years ago, I was on a work trip to Johannesburg and was staying in a B&B in Richmond. The owner pointed out the button
on the wall next to the bed. "Be careful not to accidentally push that unless you want 2 guys with pump action shotguns in here".
They would have been summoned from the local armed security service that the owner subscribed to (local cops are useless).
Yes, it can be dangerous but don't let that spoil your visit. Take the usual precautions. Always ask the locals for the best
security advice. It's a spectacular country and full of wonderful people.