I spent four years living in Rochester, New York attending RIT in the 60's. I understand urban life.
Economic collapse, is also an area I have painful experience in. In the 1980 suffered a certified depression (you can do a search) we lost 76% of our banks, credit unions, savings & loan companies to bankruptcy. I personally lost $963,000.00 (my entire first million)
As to dealing with "Hordes of Rioters" I assure you 1965-1969 Rochester, NY was torn apart by rioters. I also have rioters on my property, they do substantial damage eight months a year, they even mauled my friend of 21 years to death in the backyard. Then the Grizzly that killed Dan, ate on him, when that bear was full and walked away a Black Bear stepped up and ate on Dan.
As for loss of power, I have lived for decades with no power deep in Alaska wilderness.
Sorry, that I seem to be upsetting members here. I am very passionate about the future of the prepping movement. Now nearing eight decades of adventures on earth, I was informed by my medical people on September 28, 2022 that my time is over. So I am endeavoring to help the future of prepping as best I can. My structured training started in 1952 by men whoo returned from WW-II.