Inexperienced reporter is beginning to misconstrue art movement (6)
I believe the answer is:
cubism
'art movement' is the definition.
(cubism is a kind of art movement)
'inexperienced reporter is beginning to misconstrue' is the wordplay.
'inexperienced reporter' becomes 'cub' (I've seen this in other clues).
'beginning to' suggests taking the first letters.
The first letter of 'misconstrue' is 'm'.
'cub'+'is'+'m'='CUBISM'
(Other definitions for cubism that I've seen before include "Style of e.g. Braque" , "Art style of Picasso" , "C 20 painting style (Braque, Picasso)" , "Art style portraying objects as geometric shapes" , "Picasso's movement" .)