Just in case you Aussies are wondering about the mechanics of how a society breaks down and rots, here is a weekend in Chicago. I lived there long ago, but now I wouldn’t even want to visit the place under armed guard in a tank:

“Saturday
8:22PM — “Mayhem,” says the downtown police dispatcher, taking a few brief seconds to summarize what she and Chicago cops are dealing with.

8:26PM — Lakeview: Officers call for backup. Fifteen to 20 people are beating up a boy who tried to prevent them from stealing a bike at the Lane Tech High School Memorial Day carnival.

8:39PM — 70 or 80 teens coming off the Chicago Red Line. “Tell Water Tower to close their doors; otherwise, they gotta let ‘em in.”

8:42PM — Fights behind the historic Water Tower. Crowd: 200 people, per dispatcher.

8:45PM — “Water Tower is closed. There’s one door open so people can exit.”

8:46PM — Cop: “Got a large fight on Pearson just east of Michigan.” “Have Water Tower lock their doors.” “They are, they are.”

8:55PM — Rush & Chicago Avenue: A group ran into Nordstrom Rack, saying someone has a gun outside. Issue appears to be fireworks set off near the historic Water Tower. Also: More cars needed outside the location for a fight.

8:56PM — Millennium Park: “Caller says a Hispanic male has a baseball bat in his pants.”

9:11PM — Sergeant: “We have a Cubs game letting out. Send teams down to the platform at Chicago and State to make sure order is being kept” as the arriving Cubs fans mix with teens waiting to leave via the same station.

9:21PM — Big fight outside the Park Hyatt, says an officer.

9:39PM — “We need everybody we have to try to get rid of these people” at Chicago and State. “Push ‘em to the Red Line.” “Maintain the perimeter, do not let anyone out.” At least four arrests for resisting police.

10:05PM — “Hundreds” running wild in the streets near Roosevelt Red Line station. The train from Chicago and State—which was supposed to run express to 47th Street—stopped at Roosevelt by mistake, an officer says.”
http://www.cwbchicago.com/2018/05/downtown-overworked-cops-battling-mag.html?m=1

     But, it is just another weekend in the naked city, all coming in the future to your city:
  http://www.cwbchicago.com/2018/05/mag-mile-goes-wild-at-least-four.html
  https://www.youtube.com/watch?v=bEzSh6SFbRg
  https://www.youtube.com/watch?v=C5_t3lLUjXQ 
  https://www.youtube.com/watch?v=xLMB76bP0EU

“President Trump, during your presidential campaign you made a promise to send federal troops to drain the swamp in Washington, D.C., and also one festering with feral thugs and gang-bangers who are committing genocide among black Americans right in the great city of Chicago. I won’t quote you the homicide statistics, past and present, because by the time you read this they will have changed. Suffice it to say: They are horrific. Something is terribly wrong when, in the most moral nation on earth, its third-largest city is ruled by gangs with a crime rate that is 35 percent higher than the national average. Wannabe-commandos terrorize neighborhoods, challenging not only local authorities but the very authority you exercise as president of this great nation. The potency of your own presidency is ridiculed when thugs and barbaric criminals take it upon themselves to establish lawless fiefdoms, usurping the law and order on which this republic was built and upon which its continued existence depends, as they kill innocent lives. I implore you to use your powers to suspend the dated Posse Comitatus Act, which unfairly limits your ability to use domestic militarization to respond to crises, and send in the resources necessary to stem the violence overrunning Chicago.

Let me explain why this measure is necessary, starting with my story. I am a black college professor who came to this country as a legal immigrant from Jamaica 32 years ago with $120 in my pocket. I worked for a year to save enough money for one semester of college, and for four years worked up to 45 hours per week while going to school full time. I graduated magna cum laude and then earned a scholarship to pursue a doctorate in philosophy. Not once did I believe that the state or America owed me anything except a chance to earn a living and pay my way as I journeyed through life. When I came to this country I promised that, in the name of the best within me, I would cultivate the American virtues of individualism and personal excellence and take advantage of the opportunities that lay before me. These virtues would guide my actions and serve as the only legitimate currency to purchase a life that would be worthy of an American. And I would extend the American ethos of benevolence and goodwill to others, and expected it to be reciprocated. The America I have come to know and love as an American citizen is a country predicated on mutual exchange.”
http://thehill.com/opinion/criminal-justice/389056-mr-president-please-send-the-troops-to-chicago

     This is reasonable, since Chicago is in a state of war. And, it is not primarily Black on White, but Black against Black:
  https://www.jefferymyersunleashed.io/black_on_black_by_the_numbers