I've learned:
1) Never allow the police to "question" you at the PD without an attorney with your interest at heart present.
2) Police and other LE personnel can (and do) lie.
3) The justice system is seriously flawed, and IMO the biggest flaw is the jury system. How can we expect a jury of ordinary citizens to hear and understand some of the intricate matters in criminal cases? (BTW, I'm not sure what the "fix" for this problem is, but this case is not the only one which, IMO, demonstrates the problem with juries)
4) There still are some good people in the world who are willing to fund necessary procedures that eventually will allow falsely convicted men to go free.
5) Unfortunately, there are some people who wouldn't recognize the truth if it bit them on the butt, and they therefore never admit when they're wrong.
6) Being/looking different can land you on Death Row.