Leftist are propagandists, liars. They use the words fair and just without understanding what they mean. Fair means "without bias or favoritism" in this context. It means we treat other as though they have value. It does not means that we owe anyone anything. Nor can anyone be fair to you when the left take your property to give to others.
"Just" means in this context "acting or being in conformity with what is morally upright or good." Leftist have highly distorted definitions of morality and goodness. It is just that some people will have more than others. They have more because they work hard, invested well and been prudent. It is never just to steal for from others or have the government steal for you.