Refuse to touch poster for criminal (11)

I believe the answer is:

blackmailer

'criminal' is the definition.
(blackmailer is a kind of criminal)

'refuse to touch poster' is the wordplay.
'refuse to touch' becomes 'black' ('black' can mean 'boycott' or 'refuse to handle').
'poster' becomes 'mailer' (I've seen this before).
'black'+'mailer'='BLACKMAILER'

'for' is the link.

(Another definition for blackmailer that I've seen is " criminal".)

I've seen this clue in The Guardian.

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