My sympathys and condolances go out to all that have suffered in London yesterday due to the latest terrorist attack to plaugue Human society.
Why the tsetse fly reference? That’s what Terrorists are! Just as tsetse flies annoy and occasionally kill some of the members of a herd of wilderbeasts the herd marches on and indeed lives on. Human society marches on too. The majority always has its way and at the moment the majority of us want peace and security in our lives!
The flies are a buzzing annoyance to the majority of the herd. Terrorists will never achieve anything on the world scene and in that sense they are failures one and all.