There are people in jail and without a job currently for following training and policy issues.This is not over. If this is determined to be a Federal Civil Rights Violation then the US DOJ can strip the officer of his Qualified Immunity.
There can also be a Civil lawsuit brought on by the family.
Just because an officer "did not violate policy and training etc" it can play out that just because it was "policy and training" doesn't always mean that will stand up in court. There are many cases of a law enforcement person violating Civil Rights according to "policy and training" and those "policiy and training" were ordered to be eliminated.
As expected, there are various terms and conditions that must be met to qualify for this to happen. It's not automatic.
I'm not a lawyer or law enforcement person so take my comments in a general sort of way. This is far above my paygrade.
However, if I were selected for jury duty I- know how I'd vote.