I agree that the jury came to the proper verdict and that the case should never have been tried.
There is a somewhat related issue, however. There is a very different justice system for minorities than there is for Caucasians in this country. This difference needs to be resolved. That is no reason for injustice to occur to 'make up' for prior wrongs, as a conviction in the Z case would have been, however.
Our family contains both Caucasian and Black members (their family does not like the term African-American) and we love them all. It has been an education seeing first hand the attitude of Law Enforcement toward the Black family members. One example: When my daughter and her Black husband and family visit his parents in Tulsa, they are always stopped at least once, when they are driving together, by the police. The officer comes to my daughter's window and she is asked: "Are you OK?"
At home, here in the LIBERAL suburban Seattle area my S-I-L has been stopped while driving innumerable times by local police who just wanted to ask "So, what are you doing here?" They live across the street from us. I have never been stopped by the local police. His family has a term for this: DWB - driving while Black.
Now don't get me wrong. I am a conservative and support 2A rights, stand your ground, etc. All I am saying is that there are well founded reasons that minorities distrust the justice system. This country is not perfect and this issue is hurting our ability to be great. There are problems with the system, attitudes on all sides, historical and cultural issues, you name it, but we cannot hide from it. We need to fix what we can as individuals and as a society.