Threatening pursuit – victimisation (5,4)

I believe the answer is:

witch hunt

(Other definitions for witch hunt that I've seen before include "act of persecution" , "Campaign to discredit someone for their allegedly unorthodox views" , "Harassment of those with dissenting views" , "Search for scapegoats" , "Unjustified persecution" .)

I've seen this clue in The Guardian.

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