Appeal to the sympathy of the public and they will feel that your opponent has committed a crime against something they hold very dear. Make your enemy look immoral and unethical in other people's eyes and they will stone him to death. You will not have to throw a rock even.
It sounds cruel and strange and dreadful. Yet, it happens everywhere around us, often without us knowing it. Sometimes, we're the public, we're throwing the stones, judges in a subjective courtroom. Sometimes, we're the ones pointing the finger.
There is no conclusion to this. There never is.