They are called brickmakers ! yes !! indeed they are.. They dredged the wet soil from the canal and transport it to the brick factory where the soil has been put into the shapers before send it to the furnace.. Years after years they are making those bricks which are the part of the modern civilization but.. alas!! there have been no improvement at all of their living.. These are integral part of my city, the city of joy, Kolkata.. For everyone..