I kinda do.
So many people who have never studied a single letter of the law cry out over how "unfair" they perceive the justice system is, but if you truly look at it, the Justice system is incredibly robust and does its job well 99% of the time. This is of course coming from a Canadian perspective, American justice seems to be a little less robust but definitely not as "corrupt and evil" as some seem to believe.
I do, because the system works. Just because controversial rulings are the ones to get all of the attention, it doesn't mean that everything is exactly like that. The vast majority of the justice system is efficient and fair. Everyone saying it doesn't needs to look into the subject more, because the numbers are WAY against what you're saying.
Faith in the justice system? Not sure I would use the word faith, justice is something that as an ideal has to be fought for, argued over, criticized, refined, corrected, improved. One shouldn't just hope for the best or trust that justice will happen. Consequently a justice system can always improve and it can also devalue and weaken. Ideally you would want a justice system to be in an ever constant state of improvement, even if its a really good justice system, that would just mean the improvement is a slow trend from really good to even better. So do I have faith in it? No, but I do trust and recognize it in a general sense as well as acknowledge that things can be worse. I also acknowledge that many are in a constant battle to improve it and many seek to undermine it and I have my place to try and better the system. Some justice systems are better than others and this should be recognized. Other justice systems have a more complicated and difficult environment to adjudicate over, this has to be realized as well. I hold a similar attitude towards people in the sense I don't like to have faith but I like to trust and I trust that people will seek to make things better for themselves and others and that over time most justice systems will benefit from that.