All opposition parties are going to join hands and protest against what they said 'exploitaive policy of the BJP government at the Centre and the State on May 27.On the same day,leaders of these parties including the JMM,Congress,Jharkhand Vikas Morcha,CPI,CPI-M and JD(U) and RJD who held a meeting today will hold procession in front of the State Assembly,said Congress leader Subodh Kant Sahay.