Social justice is "teaching kids to question whoever happens to hold the reins of power at a particular moment. It's about seeing yourself not just as a consumer (of information), but as an actor-critic".
I would say being an advocate is the most important part of social justice. standing up for what you believe is hard. it can be extremely overwhelming and intimidating to be the one who speaks out against what is wrong. many kids are too scared or shy to ever say anything. this is why being an advocate is so important.
as teachers we can advocate for students. parents hold the tightest part of the reigns in their lives. not every kid is safe at home. its our job as their teachers to make sure they are safe. if we see something that is not right we need to speak out for them. at school you can be the barrier between bullies and victims. openly talking with students about problems with bullying can prevent these problems. if a student comes to you with a bully issue you can resolve it and watch to prevent further issues.
special need students also need someone to advocate. there are many groups of people with special needs that never get the added attention or help they require. as an instructor its our duty to weed through everyone's issues and find out what actions need to be taken to ensure every individual succeeds and is able to perform at the highest level possible.
at every level we need to speak out for these kids needs. its our duty as their role models and teachers to ensure the welfare of every individual.