http://newsfeed.time.com/2012/11/19/indian-woman-arrested-ov...
But the case you mentioned is one of the small number of such cases (I remember one from the state of West Bengal). And in this case, the over eagerness of local authorities was criticized by both the government and public.
As of now, I would place India somewhere between UK (with its defamation laws) and US (gold standard of free speech) on the free speech issue. I do hope that the government takes steps to make sure that local authorities do not have power to override the right of free speech.
(Disclaimer: Indian citizen)
The "somewhere between UK and US" comment is theoretical and is about what the written law says. The way it is practised is clearly worse than both. You don't have to watch your back when you criticize a politician in the UK, and certainly not when you "like" someone doing that. Even if it was later criticized later on, it did happen, and I would guess it got no consequences for the people that prosecuted the two women.
[1] http://indiatoday.intoday.in/story/kerala-student-life-in-ja...
It appears that there's people in this thread who downvote anyone who's from India and doesn't think things are as bad as suggested.
Many Indians think this way: "Freedom of speech, it's not that bad in India. Modi will change everything."
Shocking thing is that a lot of Indians also believe that these people deserve to be jailed for speaking against politicians. Even worse.. they are beaten by a mob and their house is ransacked.