Wrongdoing by brash revolutionary smuggling bit of smack and dope (8)
I believe the answer is:
trespass
'wrongdoing' is the definition.
(trespass is a kind of wrongdoing)
'brash revolutionary smuggling bit of smack and dope' is the wordplay.
I cannot really see how this works, but
'dope' could be 'ass' and 'ass' is found within the answer.
This may be the basis of clue (or it may be nonsense).
'by' is the link.
Can you help me to learn more?
(Other definitions for trespass that I've seen before include "sin in the eyes of the church" , "Enter another's property without permission" , "Transgress" , "Illegal entry" , "Encroachment" .)