Bad cops not completing condition of arrest (5)
I believe the answer is:
stasi
'bad cops' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'not completing condition of arrest' is the wordplay.
'not completing' means to remove the last letter.
'condition' becomes 'sty' (sty is a kind of condition).
'of arrest' becomes 'asi' (I can't explain this - if you can you should give a lot more credence to this answer).
'sty' with its final letter taken off is 'st'.
'st'+'asi'='STASI'
Can you help me to learn more?
(Other definitions for stasi that I've seen before include "Former German security service" , "old secret service" , "Former security force" , "East German Secret Police" , "Secret police of the former German Democratic Republic" .)