Yea... it's nice law. In Moscow it's very profitable business for the police.

You go walk to nearest barber shop, police car stops nearby.

-Your documents, please.
-Sorry, I just forgot it at home.
-Ok, then you must go with us to police station.
-No please, I have to go.
-Pay for the walking without ID.
-I have only 15$.
-No... 20 minimum. 40 in police station.
-RRR...
...
After 3 hours your mom comes to this police station with you documents.
You dont pay anything and go for free.
3 hours lost, barber shop closed.

You had nice experience and interesting discussions with fellow-sufferer.