In Adelaide there is no subtle racism in my opinion, there's a lack of job opportunities which is the main problem.
That migrants don't get proper jobs you can also see in Europe now, where for example high qualified Spanish migrants move elsewhere in the European Union and some of them get only work offers at McDonalds or jobs as waiters.
That phenomena leads me to the point of believing that more migrants are coming here than real jobs are available for all of us.
In my opinion it's rubbish to think that a higher population growth in Adelaide (like the 30 years population plan) will automatically create more jobs.
The other way round seems to be true. A demand for sth. implies jobs.
The main issue is the weak Infrastructure in SA, when I look to Melbourne with its highways, trams, the biggest port of Australia where most of shipments take place, high density of industrial facilities etc.
South Australia should attract more companies to settle here which would create more jobs.