OK member of the bourgeoisie receives black mark (2,7)
I believe the answer is:
no problem
'bourgeoisie receives black mark' is the definition.
I know nothing about this answer so I can't tell whether this works.
'ok member of' is the wordplay.
I cannot really understand how this works, but
'member' could be 'm' (political abbreviation) and 'm' is located in the answer.
'of' could be 'o' and 'o' is located in the answer.
This explanation may well be incorrect...
'the' acts as a link.
(Other definitions for no problem that I've seen before include "fine" , "Don't worry about it!" , "Easy peasy!" , "of course" .)