Wailing police cars rarely drove through the streets of Silin District, as it was mostly inhabited by elderly people who weren't wealthy, with nothing worth stealing or robbing.
Moreover, this area was a typical residential zone, and while there were shops on the streets, if you demanded too much money from them, like more than twenty dollars, they might opt to shut down and relocate their business elsewhere.
For the elderly folks of the Federation, once they entered what's called their "twilight years," they lost the ability to earn money.
Without the capacity to earn, what spending power could they have?
With little spending power, the profits of shops naturally weren't high, which is why the area's security was relatively better.
