For me, people hands down the winner. Very few things in life can truly be called intentionally evil, that is to say they actually want to cause harm something or someone without reason. For that level of twisted behavior, you pretty much need people. BTW, you don't need to worry about the LHC, at the kind of energy levels it can produce, even if it did create a black hole, it would "evaporate" almost instantly. If you need proof, consider the fact that literally thousand of collisions at even higher energy levels occur every day due to cosmic rays passing through the earth. The only real advantage that the LHC has is that it gets to pick where they happen, otherwise, it is still pretty much a wimp