If you believe that your race, ethnic group, etc. doesn't get a fair shake from the legal system a small way you can help is to respond if you get a jury summons. I got called this week for jury duty and Monday morning arrived to a room of 250 people that was a sea of white. Both the cases that I went through jury section for the defendants where not white. Sure it shouldn't matter but if I was either of those defendants I'd be hoping a jury of my peers would include some that looked like myself. The County Seattle is in is predominantly white but far from 100%. Wondering if what I was seeing was the norm I asked clerk over seeing the jury pool and they said that getting the non whites to show up for jury duty has been a long time problem.
Just saying if your not happy with the legal systems treatment of yourself or others then participate and encourage others to when given a chance.