They usually come in hordes and attack any content against Modi on the web usually by unethical tactics like questioning your character/love for country, down-voting, mass reporting, abusing and general trolling - whatever it takes to shut the critics up.
Modi is part human and part mythical figure for the Bhakths - I kid you not :).
This. And to add a bit, it is a little-kept secret that many/most are paid workers, hired to carry out those activities.
I will leave you with this TED talk: https://www.ted.com/talks/chimamanda_adichie_the_danger_of_a...
Never build your worldview with what is provided by a hate-filled single sided opinion.
"In 2005, Modi, an ardent Hindu nationalist and rising political star, was denied a U.S. visa over accusations that he failed to stop religious pogroms in which hundreds were killed, mostly Muslims, in the Indian state where he was serving as chief executive. That decision to bar him now seems like ancient history in both countries. "
http://www.latimes.com/world/asia/la-fg-us-india-modi-201409...
http://www.dnaindia.com/india/report-modi-still-a-persona-no...