Firstly bad idea to video, second the black people would not want to waste a bullet hence the reason for the axe, and third I'm not sure this was illegal at all regardless of that letter. We shouldn't judge these people it's their business.
It is a shame that Namibia, well meaning as they are, have banned hound hunting of leopards. I believe the statistics show something like a 10 to 1 ratio of problem animals killed by farmers versus trophy hunts (it may be more extreme even than this). Everyone must understand that predators who are killing livestock in inhabited areas CAN NOT be hunted successfully by conventional means! The will be 100% nocturnal and very clever. The only way to hunt them is with hounds. It's a win win situation because the stock killer is taken and the trophy hunter is happy. How much money did Namibia get for that leopard in the video $0.00!
Regards,
Philip