There are lots of arguments you can marshall in support of violence as the only way to deal with some kind of situation. But when it comes to saying that they are consistent with Christianity, that is a much harder thing to argue.

Traditionally people have tried to reconcile the two things by drawing up requirements for a "just war". However in the case of this one, there seems a pretty general consensus among almost all churches around the world that it does not satisfy these requirements, and it is not a just war.