I think this is perfect approach by BJP. They need to fight it out legally. If Congress/Left has issues with what Modi said then WB Cheif Minister is more guilty. WB CM's remeark of "tit for tat" in Nandigram is implicit admission of a crime and then that guy was NOT talking on behalf of police but was talking on behalf of his party caders.
And again, what Modi justified police encounters and NOT "fake" encounters in his remark. There is a world of difference between these two.
BJP needs to show same kind of aggression when they deal with hypocrat Congress/Left.
