Pretty interest perspective.
In Italy we have the concept of "omertà", a code of silence spread through fear, that criminal organizations like Mafia, 'Ndrangeta and Camorra uses to protect their affairs.
In some cases, people were killed in daylight in the middle of a square and "nobody saw anything".
"Mind your business" doesn't scale: it let people pollute the world without being blamed, it let bribery spread, violence stay unpunished and so on...
It is your businees.