Yes, yes it would totally be murder. Maybe. Or not. If no one's ever seen this
, it's a great little animated cartoon that explores this very issue.
There's lots of things I'd change in ST, and one of them is how transporters work. Instead of matter-to-energy conversion, it should be explained as opening a small wormhole for the briefest of moments. For dramatic purposes, it would work exactly the same, but the explanation would make more sense; no need for "Heisenberg compensators", no need to think about if transportation=murder, and a wormhole transporter would work using similar technology to the warp drive.