We are all at the mercy of the bottom quintile. The rules you follow (or are expected to follow) are based on the behavior of the bottom quintile, the taxes you pay are to support the bottom quintile, the greatest risks to your life and property come from the bottom quintile, the dearth of comfortable public spaces is because you have to allow the bottom quintile to be there, and our zoning laws (in the US) are developed for fear of the bottom quintile.