Mr Opinion,
The 'alarming' is your word not my friends so, you can put a stop to inflammatory rhetoric right now !

individual,

Good, Melbourne can become Australia's first Islamic city and Sydney came be Australia's first Chinese city. That should balance things out.

Good,
Mr Opinion,
Sydney will give Melbourne something to crow about then going by the way things are in China.
Good !

individual,

Maybe Melbourne could establish a Sudanese Islamic Vigilante Group that could roam the streets beating up people they don't like and robbing jewelry stores.

Here's something to consider:

"Over the last eleven years Australia’s population growth, largely driven by immigration, has been running at record levels. For the 34 years from June 1972 to June 2006 growth averaged 210,200 per year; from June 2007 to June 2018 the annual average was 378,400.

In the earlier period net overseas migration (NOM) accounted for 42% of the increase, while in the recent period it has accounted for 59%. By 2017-18 the population was growing by 393,500 per year, with 67% due to NOM.

As the population has grown it has become more culturally diverse. At the 1976 census there were 10.8 million people living in Australia and 80% were Australian-born. Most of the rest (17%) had been born in the UK, Europe or New Zealand. In 2017 the total was 24.6 million with 71% Australian-born, 12% born in the UK, Europe or New Zealand, 14% in the Middle East, North Africa or Asia, and 3% in Other Africa or the Americas."

http://tapri.org.au/wp-content/uploads/2019/04/Tapri-survey-2018-final-report-April.pdf

This is a staggering demographic and cultural transformation. Let's stop pretending otherwise.

FrankU,
Staggering indeed. By how much has the welfare outlay increased during all this ?
And, how many of these immigrants are no longer dependent on welfare ?