All that shit in the 10 commandments was overwritten by the teachings of Jesus, which are in fact quite clear that any form of violence should never be exercised under any situation. Of course, it's fun that the more religions folks are, the more they tend to approve of such actions for anyone they deem to be bad.
I imagine that it's kind of like franchising of McDonald's...one guy created the store, then tells other folks how the place runs to be successful so they can create more McDonald's without the original owner's input.