Making analogies requires that the two ideas come from the same class of ideas. In what way is traffic and speech in the same class? The reason this becomes an

Making analogies requires that the two ideas come from the same class of ideas. In what way is traffic and speech in the same class? The reason this becomes an absolute is, unlike with traffic, the decision about which speech is abusive is objective and itself easy to abuse. When there's no way to talk about the abuse (a situation the abuser would create) then it will continue until the abuser's ability to censor speech is removed. In the real world this ability is often removed as the result of some serious violence and so most people don't like to create conditions that could lead to such a situation. People sometimes say that speech in a democracy is a nicer alternative to violence.