From across an ocean (in Europe) the USA justice systems seems definitely "weird" and hard to understand between news, movies and what probably actually happens in real life.

Me, as an engineer, I always look for most impactful issue to solve at once, but with social system I am constantly reminded that human "powered" systems (like economics, justice, politics, etc.) depend on what human do, think and hope. We can find things to fix, and we should definitely look, but boy I was surprised by how people react to some changes (irrationally, to say the least). Good luck convincing enough people that the system needs fixing (I agree with you that it does need some fixing, but I am not there, so my opinion does not matter much)!