Swept under public memory

I remember last yearend it was Nithari killings hitting headlines, then it was arushi murder. sometimes it was harabhajan controversies, then raj thakrey, cricket is perrinial, then malegaon, then finally 26/11. what happened to investigations in arushi or for nithari no one is bothered, they are swept under public memory which is as short as till the next news breaks in. Not even the journos have will to follow it. they are bound to collective mentality which serves well only when hot. else its dead issue with least TRPs.. There is is need for a watchdog on logical conclusion to these issues of public interest.