Parasites among policemen (4)

I believe the answer is:

lice

'parasites' is the definition.
(lice are parasitic insects)

'among policemen' is the wordplay.
'among' says the answer is hidden in the clue.
'LICE' can be found hidden inside 'policemen'.

(Other definitions for lice that I've seen before include "Bloodsucking parasitic insect" , "Parasitic insects" , "Crawlers" , "Wingless bloodsucking parasites" , "Bloodsucking insects" .)

I've seen this clue in the Sydney Morning Herald.

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