If the antihunter persists and you play this right, others present will be mad at the antihunter. At times you will feel a need to respond directly, but try not to say too much. Deer hunting is a subject I can, and often do, talk for hours about. On the other hand I believe in an active defense when an anti-hunter tries to tar the entire hunting profession with disfavor. We don't want to surrender the floor simply because we're not ready.
Life is sacred.
There are some obvious replies to this statement. You might point out that all humans kill many times each day. If you eat meat, it was killed, if not by you, then for you. Most vegetarians kill plants, as does anyone who weeds their lawn. These are both animals, yet most people would kill them without question.