It's not a crime in Canada to be a member of a criminal organization; it's an element the crown has to prove.
The crown has to prove that I'm a member of the particular group. For example, if it's a section 467.12 offence, the crown has to prove that, let's say, an extortion occurred. Then the crown has to prove the nexus between the gang and my extortion--that I did an extortion to recover, let's say, a drug debt of another member. So the crown has to prove those three things that were talked about earlier.