And for some "legal-show business" the police sometimes conduct raids to show that they have been doing their so-called "government duties" or "law-protecting duties" in those areas.
The police hide in the alley and corners of the streets of Sonagachhi in their vehicle in the nights and regularly pick up some customers and send them to the police lock-up.
For example, The red-light area which once existed opposite to the diagonal angle of Khanna Cinema Hall was of 'poor-class'.
When they contacted customers, they asked them "Khat-e na Chot-e" ?
Although many areas in Calcutta were inhabited by those prostitutes outside those areas also.
On the south it was Kalighat to Khidirpur dock areas, in the middle-Calcutta it was Kalinga-Fenwick Bazar, on the far south in Kareya area many girls from different social-classes of Hindu-Muslim-Christian communities were engaged with this profession.
It is not very familiar or much discussed book till now.More than that, there was no clear 'mark' or 'boundary-line' between the 'gentleman areas' and the 'prostitutes areas'.Many areas had scattered or mixed up population of those two kinds.In the year 2013, the rates of prostitution in Sonagachhi varies from ₹ 300 to ₹ 10,000 for one night enjoyment (present rate of Indian money is Rupees 65 for one American Dollar).No other red-light areas in Kolkata city has so much difference in their enjoyment rates.