Both Hindus and Muslims go after Christians because they want easy prey who are unlikely to respond with extreme violence of their own.
Actually, NLTF rebels in India’s north-east, have been waging a campaign of violence, on their own:
The NLFT has warned members of the tribal community that they may be attacked if they do not accept its Christian agenda.
http://news.bbc.co.uk/2/hi/south_asia/758342.stm