Should we give them wikis and define a proper use for them, or burninate them?
Apparently it was decided to burninate murder. Status completed!
I'm not running for mod, so I'll help you out with the more controversial solution:
Burn both tags.
Within the context of this Stack, it makes no sense to be an expert in murder or education. They are too broad and to general to be of help for story-identification. These tags are meta-tags that should be deleted.
education to me looks middle-of-the-road enough that it's not going anywhere soon. It's one of the tags in the "other aspects of a question" category I'm not a fan of, but also not aggressively against. But the questions mostly seem to be about the education system in a fictional work, so that's fine. And that is a topic that people could genuinely be knowledgable about.
I would say that we need to:
murder is more sketchy to me. Only 2 of them seem to be about the concept of murder, the other 4 are about a story where a murder happened to take place. I'd say at least remove it from 4 of those 6 questions, and I'm very skeptical about the Harry Potter one. That only leaves one question I think it "about murder". I think we all know that I recommend there :)