This was much much better than I thought it was going to be :
Seven Seconds. ( Netflix )
Written by the creator of the Killing.
Set in an snowy New York. A young, off duty drug squad officer, runs over an African American teenager on his bike. Who may or may not be a gang member.
His corrupt colleagues, convince and assist him to cover things up.
The case is assigned to a loner detective and a washed up, alcoholic District Attorney and the more they dig, the more they unravel the web of lies spun by the officers.
Has a real feel of the Shield / Southland.
Well written, well cast, dark and handles tricky subjects like racial prejudice, drug use / drug dealing within ethnic communities and endemic corruption with a real skill.
Maybe two episodes too long at ten episodes, but other than that recommended.