Hypothetical Question: Is it ethical to allow the Ghostbusters to shoot spirits with particle accelerators?

Please consider the following in this hypothetical scenario:

Richard Dawkins, Stephen Hawking, and the Pope announce at a news conference this evening that it is true, ghosts exist, and produce copious peer reviewed evidence on the web for review.

Doctors Venkman, Stantz, and Spengler start a business shooting them with proton packs and carting them to ghost containment.

Is this ethical? What rights do the ghosts have? Is this a war crime?

If you start to write a sentence with “I don’t believe in…” fight that urge and move on.