@msolga,
They want to be able to criminalize some of them even associating with each other.
Once convicted, and on probation or parole, (or even prior to court, via bail conditions) people can be enjoined from associating with known criminals and such...but that necessitates them being charged with an offence, at the very least.
This makes the ASSOCIATION the offence, as I read it.
I can imagine this being useful if there are careful checks and balances, but the NSW law was rushed through, so it is hard to see it as likely to be well-considered.....and in SA the ATTORNEY GENERAL, alone, can make a decision.
Not sure if he has, yet.....but you can see the types of concerns?