When Howard started bringing in migrants from certain parts of Africa, there was discussions and warnings about integration which was ignored. Which in doing so all but ensures you have issues with it. It isn't doing what is best for the immigrants or the wider community. Which directly leads to so many disaffected youths in these communities today that don't feel part of the wider community. Governments were warned there would be issues but did nothing.
Well before the recent reports of the last few years, Victoria had been covering up the statistics of crime related to these communities. Christine Nixon, the Vic Police Chief Commissioner in the 2000s worked to hide and even mislead the public on crime rates within certain communities to not stigmatise them.
Once again, denial of what happening helps no one. You can't help communities if you deny there are problems. PC politics, which comes from both sides of the political parties on these issues, just ignore these issues because they use immigration to falsely boost economic numbers. The argument for this starts to fall apart when you actually look at any other issues around it.