It's important to stand up for injustice because everyone deserves to be treated equally. If you don't stand up for injustice, then there is a possibly no one will. You could inspire and help multiple people, as well as bring justice to those wronged. It also helps us (as humans) learn from our mistakes.
Jeremy spent all weekend cramming<span> for a </span>test<span> on </span>time management<span>. When </span>he got<span> to</span>school<span>, </span>he realized<span> the </span>test wasn't until<span> the </span>following week<span>.</span>