It's all petty crimes. I've known a handful of low-level "members" and they were all morons (imo) running the most absurd scams.

Things like: "Hey I'm organizing a trip to Vegas. $1000 / head. Great hotel, meals paid, etc. etc."

Then the organizer has the great misfortune of being "robbed" of all the money he collected by a masked assailant.

Maybe the higher level guys were were brighter, but I kind of doubt it.