Agreed, bad officers need to be removed-- like a rotten apple before spoiling the whole barrel.  The City of Everett did that when the police chief fired officer Troy Meade after he shot a drunk driver in the back eight times.
Requiring officers to wear video cameras is a good way to provide evidence.
Then there is the controversial pardon of former sheriff Joe Arpaio.  In today's Herald, there is a letter by Phil Beardsley of Lake Stevens "Can't violate rights of a non-citizen".
He falsely assumes non-citizens have no constitutional rights.  Mr. Beardsley apparently never read the 14th Amendment to the U.S. Constitution which clearly states any "person" is entitled to equal protection of the laws and is entitled to "due process" just like a citizen is.
Joe Arpaio was a "bad apple" who needed to be removed.