"most people are not mentally prepared to confront graphic violence"
That's ludicrous. The apex predator on the planet that has violently gained control of the planet and killed trillions of other species including its own kind is not only mentally prepared to confront graphic violence, it is hardwired to conduct graphic violence on both a personal and global scale, things that were published on Liveleak. But don't be hard on yourself, most people make believe and live in a fairy tale world that props up the falsehood of who they really are. Shutting down sites like Liveleak is just another way to perpetuate the fairy tale and hide the ugly truth.