In a letter to Mr Hankison published by the Courier-Journal paper, Louisville Police interim chief Robert Schroeder wrote his conduct was "a shock to the conscience" that "demands your termination".
Mr Hankison is accused of "blindly" firing 10 rounds into Ms Taylor's apartment, displaying "an extreme indifference to the value of human life".
"I am alarmed and stunned you used deadly force in this fashion," Mr Schroeder added.
"The result of your action seriously impedes the Department's goal of providing the citizens of our city with the most professional law enforcement agency possible. I cannot tolerate this type of conduct by any member of the Louisville Metro Police Department."
https://www.bbc.co.uk/news/world-us-canada-53111709
Are the days of badges giving barbarians free license to behave as violent pig oppressors finally coming to an end in the US?