Here's an AfD that really blows my mind: Wikipedia:Articles for deletion/2008 Australian zoo killings. A child broke into an Australian zoo and killed a bunch of reptiles early this month. Well, that was reported around the world: the article's got sources from BBC News, Reuters, CNN, The Guardian, etc. And yet right now the discussion is heavily leaning towards deletion. "WP:NOTNEWS", or so the mantra goes.
As is often the case, people fail to evaluate notability in terms of attention received and importance attributed to the subject, instead looking at it in terms of whether they, as individuals, believe a subject ought to be notable, or whether a subject has some essential, defining characteristic that makes it notable. A boy kills some animals, well, don't little boys do things like that all time? The Arbitrator Formerly Known as Blnguyen says it matters no more than "the next kid who runs over a cat". Will that cat's death be reported by major news agencies around the world? It's not the event itself, it's whether other people care about it.