I doubt if Sanjay Dutt himself approves of the campaign by a Bollywood section and some of his fans against the six-year jail term he is undergoing for his involvement in the 1993 Mumbai blasts.
The conviction and sentencing were the culmination of a well-acknowledged judicial process and have to be accorded the respect it richly deserves. Bollywood isn't so deprived that it would collapse if Sanju is away for a few years. I'm sure when he is back, his reputation will be much higher than it has ever been.
Munnabhai should see what good can be achieved for himself, for the prison system and for the society at large through his tenure in jail. For example, one focus area could be greater emphasis on community service by prisoners. It's a much undervalued aspect of imprisonment.
Let's leave Munna alone to his wisdom. He can take care of himself.