Unjust to me means anything that goes against the golden rule, which is to “treat others as you want to be treated". I have a fondness for the simplicity of the golden rule and I think it puts everything in perspective in terms of morality for everyone of all ages. From my point of view the concept of the golden rule epitomizes the moral code. The golden rule is best understood by saying “Treat others only as you consent to being treated in the same situation.” When you apply the rule you’d have to imagine yourself on the receiving end of the action. If you act a way towards someone and are unwilling to be treated that way under the same circumstance than you violate this rule, thus making it an unjust action. That includes having that other person’s likes and dislikes in mind. Of course I do believe there are levels to it, a murder isn’t on par with stealing your brother’s socks.
President John F. Kennedy applied the golden rule in his speech in controversial days of de-segregation in 1963. That was at the time when the first black person enrolled at the University of Alabama. In this speech he asked white Americans to imagine themselves in the shoes of a black person. They were to imagine themselves being told that they couldn’t vote or eat in a great deal of the public restaurants at the time, or sitting in front of the bus. To treat the blacks how they would like to be treated in their shoes. He added this bit to his speech “Heart of the question is … whether we are going to treat our fellow Americans as we want to be treated.”
The earliest reference to the golden rule dates back to about c. 2040 BC ancient Egypt “Do for one who may do for you, that you may cause him thus to do.” – The Tale of the Eloquent Peasant. I have found that the rule is one common facet amongst virtually every religion. “There is nothing dearer to man than himself; therefore, as it is the same thing that is dear to you and to others, hurt not others with what pains yourself.” Buddha (ca. 563-483 BCE). “To those who are good to me, I am good; and to those who aren’t good to me, I am also good; and thus all get to receive good.” Laozi. "What is hateful to you, do not do to your fellow: this is the whole Torah; the rest is the explanation; go and learn" was said by the great rabbi Hillel when he was asked to condense the whole Torah into sentence. You may hear the term in a multitude of distinctive ways but they all mean the same. The difference I have observed is that there is a negative way and a positive way to explain it. “Treat others as you want to be treated” being a variation of the positive version and a negative example would be the version Hillel put forward. Philosophers in history like Socrates, Epictetus, and Mo Tzu have also acknowledged and incorporated the golden rule into their studies.
The candidness and modesty of the rule is another fascinating aspect of it, but we can’t always take it so...