I can wrap this narrative up in all sorts of broader sentiments about what it means to do the right thing, and how bullying is wrong, and at the same these are all broader problems. Honestly, though, "Mourning Grave" doesn't go into any of this stuff with that much depth. For the most part, this is just a scary movie. It's a reasonably tense and frightening movie that does a decent job on its jump scares, and likely worth the price of admission. At the same time, it's not quite so clever as it thinks, and the juxtapositions don't always work out in the best possible way.