I have been told that, in order to be able to set up a prison gang, the population has to be somewhat concentrated. For example, in order to set up an aboriginal gang, there has to be a concentrated aboriginal population. In other words, there has to be in the institution a significant number of potential members to be recruited and they have to be in close proximity to one another.
Is it possible that aboriginal overcrowding in federal institutions has contributed to the creation of those prison gangs?