MUMBAI, May 7 -- Special public prosecutor Ujjwal Nikam's candidature from Mumbai North Central as a BJP candidate has once again raked up the issue of the killing of top cop Hemant Karkare in the 26/11 terror attack on Mumbai. On Thursday, Congress leader Vijay Wadettiwar sparked a huge controversy by declaring that Karkare was not killed by Pakistani terrorists in 2008 but by an RSS-linked police officer....