Just a heads up that, while absolutely tragic, this happened two years ago! http://www.iucnredlist.org/details/39319/0
And just because the article is a bit hazy, it might be worth reiterating that this is a subspecies extinction, and not an entire species- if the reaction two years ago is anything to go by, there are usually a lot of people crying out about the loss of the Black Rhino species as a whole. 
-C
