Thatcher, for example, sent up some policemen as it raged (7)
I believe the answer is:
artisan
'thatcher for example' is the definition.
(thatcher is a kind of artisan)
'sent up some policemen as it raged' is the wordplay.
'sent up' shows that the letters should be reversed in order.
'some' indicates a hidden word (some of the parts of the word are used).
'nasitra' is hidden in the letters of 'policemen as it raged'.
'nasitra' reversed gives 'ARTISAN'.
(Other definitions for artisan that I've seen before include "Train as (anag) - craftsman" , "Skilled worker or craftsman" , "crafty person?" , "Skilled worker by hand" , "Skilled tradesman" .)