I will tell you a personal experience since it is the closest I have been to such situations: I was shopping in a street market, while I was talking to a lady from whom I was going to buy some things, two men arrived with a notebook and pencil, they approached the lady and said one word "cleaning" and she immediately searched her purse for money and gave them some... and so on, they went from vendor to vendor collecting their daily quota. This is not something current, the quota collectors are criminal gangs that have control of many areas of the city and force people to pay... In recent months there are people who have refused to pay, which has led to more violent and blatant murders, the violence has been magnified. Even near that street market, the extortionists left a bomb in a hardware store that refused to pay. All payments are in cash.