Very well stated. We used to do what we called RCFA (root cause failure analysis) when I was in manufacturing. It is very useful in all areas when you have a failure of some type and need to understand why so it doesn't happen again. It makes you really dig for causes. Without jumping to conclusions I'd have to guess that black crime and high emotional levels of police officers might show up on flip chart. If you listen to CNN cops are racist thugs which is not the case.