Why no politician protests about Manu Sharma being granted parole?

Firstly, I was not aware that convicted criminals could be granted parole because their mother was sick. Thanks to Manu Sharma, the convicted murderer of Jessica Lal, I know that now. A little research informed me that, "under Section 3 of the Temporary Release Act, 1988", the State Government has the authority to release prisoners temporarily on some basic grounds as stated in jail manuals. We all know that Manu Sharma's father is a Congressman and its Congress government in Delhi as well as centre. So it didn't come as a surprise that he was granted parole for visiting his supposedly 'sick' mother who looked quite hale and hearty.

But what took me by surprise was why I did not hear a murmur of protest from any politicians about this move. Obviously the move was a standing ovation to the corruption in India. Then why no MNS, SS, BJP came forward to create a ruckus over it and raise slogans? Manu Sharma was quietly released on a parole, right under our media's vigil nose and we didn't even hear a whisper until the reports of his late partying surfaced. And yet no politician thinks its a worthy enough topic to be raised in parliament. Probably it doesn't evoke sentiments of emotional Indians like religion and linguistic issues do.