Murder is definitionally killing that isn't okay. That makes your statement a bit strange, from a logical standpoint.

There are people that think killing is okay, you're almost definitely one of them. It's just, there's a very specific set of contexts where killing is considered okay. For example, a police sniper taking out an active shooter at a sports event would probably be nearly universally considered a justified killing. It isn't murder because there are reasons it's ok for the killing to have been done.

Just an interesting thing to think about. Using murder for examples like this is a bit loaded.