I used to work with some people that left south africa. In every class at school there were 1 or 2 kids who had lost a parent to murder. Every class
They left when a neighbor was murdered despite having 12 foot tall fences around the neighborhood and four armed guards for 60 houses.
About 10 people and they all had the same stories.
It looks like to me that they believe the risk is manageable.
There are at least two South African families at our church. They emphasized that they came here for safety, though immigration law considers them less desirable than if they were black Nigerians.