The timeline below shows where the term Policzai appears in The City & the City. The colored dots and icons indicate which themes are associated with that appearance.
Chapter 26
...Borlú’s hypothesis about Yorjavic, Ashil leaves and returns with the information that Yorjavic was under policzai surveillance most of the nights when Mahalia locked up the site.
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Chapter 27
...they’ll shoot. He announces that he is not there representing Breach, but rather the Besźel policzai, and reminds Buric that he has broken Besź law. He adds that he doesn’t care...
(full context)