As horrible and evil as this is, it really is nothing new in Africa or certain parts of Asia. I figured out a long time ago that the only thing keeping things in order there is the machete and AK - the strong make the rules and the rest fall in line or die, quickly if they are lucky. The superstition, moral character and general outlook by society as a whole doesn't change. Within individuals, it can. But the whole of society is another matter. And if those that act like this get in power this is what you get. This is also why we see the same things being played out by those that have migrated all over the world. Until they are forcefully stopped they will act like this everywhere. We may want to think of it as just a sub-Sahara Africa thing, it isn't. It's the entire continent and nearby countries.
The dude that had his dick bitten off would do the same to the guy doing it if the roles were reversed.