If we are going to have a philospohical and analogous conversation/debate about animals and how society may appropriately react to these situations, lets at least be factual. MOST sharks....are not endangered. Even the most liberal analysis shows about 143 out of 450 species as some sort of "endangered" - and that is a stretch documented by environmental groups with an agenda. Please dont think that I dont understand the senseless killing and finning of certain sharks in some parts of the world - but - to add drama and color to the conversation by insinuating that "most" sharks are endangered, is ridiculous. Sharks, as a whole, are certainly worth protecting from the senseless slaughters - but lets "keep it real".
And, if a rare breed or endangered animal on land attacked a person, An attempt to hunt that specific animal would occur. In fact - even in ZOO atacks, when the human is 100% at fault - the animal is often put down - regardless of its position on the endangered list. Domestication is irrelevant.
Again, Im not condoning the killing of random sharks in revenge - only pointing out the hipocracy of how we react to similar situations.