You are both right. However, in the article [1] a large number of police officers were either acquitted, are awaiting sentencing, or were not punished, what the general population would consider, fairly.
When we hear about police departments agreeing to settle - that does not give us, as a society, a closure. Individual police officers have committed crimes, but now the tax payers are paying for that? That's not accountability.
My position is that there is some accountability but it's not sufficient for any reasonable standard of justice.