The right of self defense is not enough. A society is needed to resolve conflicts.
Otherwise the strongest or most articulate will be more equal. Wait! That is the way it is, always has been, and always will be.
In more primitive times there was trial by combat and the strongest was right. If a person had enough money a champion could be hired.
Today we have laws and the person with the most money can hire the best lawyer (champion). Nope, nothing has changed. All people are equal. The rich are more equal.