Actor Prakash Raj led a CJP protest rally at Kochi's Marine Drive, with around 500 activists demanding the withdrawal of the Special Intensive Revision of electoral rolls and the resignation of Chief Election Commissioner Gyanesh Kumar. Kochi: A protest rally organised by the CJP as part of its 'Jantar Mantar at Kochi' campaign began at Marine Drive here on Saturday, with around 500 activists participating, organisers said.