Regarding extortion racket, how this happens. When the marriage do not work for 100's of reasons, specially with todays demanding wifes.
There is bitterness, and who do not like easy money by wrong LAWs, specially by the domestic violence LAW ( from oct 2006 ), in which you get costiliest house of relative. Thus the extortion racket is started.
It is tempting to say give me this much money or go to Jail in dowry LAW 498a.