Detectives' line-up for breach of the peace (8)

I believe the answer is:

disorder

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'breach of the peace' is the definition.
(I've seen this before)

'detectives' line-up' is the wordplay.
'detectives'' becomes 'dis' (Detective Inspectors, DIs).
'line up' becomes 'order' (I can't explain this - if you can you should believe this answer much more).
'dis'+'order'='DISORDER'

'for' acts as a link.

Can you help me to learn more?

(Other definitions for disorder that I've seen before include "Muddle" , "Riders do (anag)" , "breach of the peace" , "Do driers create untidiness?" , "Confused state" .)

I've seen this clue in the Irish Times (Crosaire) and The Irish Times.

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