Because it becomes more persuasive. When arguing normally people throw up bias information such as "More people believe me than you" that may sound like a fact but that person does not no for sure. This is why when having an argument evidence is imperative to it's success. Without evidence then it normally never really ends until it is broken up. Hope this helps
all you have to do is think about what you think injustice and inequality in society and the justices system is to you and use you ideas to write a paragraph. you should use a bubble diagram to collect your ideas.