Firstly, this nauseating, puke-inducing "equal equal" needs to stop. Who on this forum supports or endorses "genocide against Muslims"? At worst (very worst case) some people might argue occasionally that Muslims need to be sent to Pakistan. And that is an exception, and a very rare occurrence. So, why pull stuff from one's posterior? In fact, even on unmoderated comments sections of news sites or Youtube, I very rarely see Indians calling for genocide of Muslims. It hardly happens.
So, lets stop this irritating equal-equal. That irritates the shit out of most Indians, you know.
Secondly, coming to "thought crimes" and "healthy societies". I want an exception to be made when it comes to ISIS. This organization is the face of evil. It is organized evil in a form that the world has not seen in a very long time. Anyone who propagates the ideology of ISIS needs to be muzzled. We have already seen ISIS flags in various parts of India, we've seen Indians travel to Iraq to join ISIS, we've seen ISIS propagandists spreading the message.
We cannot allow any of this, and have to snuff it out in its infancy. If that goes against "liberal ethos of not punishing people for thought crimes", so be it. When someone is caught indulging in such a "thought crime", he can be slapped with the IPC charge of "waging war against the nation", if nothing else fits. This is essential, period.