You mean to say there are no Christian extremists in India, who take up violence?
Well, think again.
http://www.globalsecurity.org/military/world/para/ndfb.htm
The National Democratice Front of Bodoland (NDFB)
The NDFB is led by its chairman, Ranjan Daimary, also known as D. R. Nabla. The group was formed to attain a "sovereign Bodoland" in the region to the north of river Brahmaputra. In addition the group protests the current script of the Bodo language written in the Devnagri script. The NDFB is primarly comprised of Christians who prefer the Roman script. NDFB have committed scores of incidents of violence like murders, bomb explosions, kidnapping for ransom etc. which have had a serious bearing on the law and order situation of the state. According to the Union Home Ministry's 1996-97 report, a total of 201 persons were killed in Assam between April 1996 and March 1997, 174 which were attributed to the NDFB.
These people are fighting for Independence, not a Christian Crusade like the Hindu facists.
I went to that link.
(By the way, I would strongly caution anyone who does not have very strong security settings on their computer NOT to go to that site... it tried to access my ActiveX TWENTY-TWO times. That has to be a record!)
It very much sounds like that those who support that cause are only incidentally Christian; the site makes it seem that the group is made up out of an equal number of Hindi. Labelling the group "Christian extremist" seems very uncalled for, since their goal certainly has nothing to do with promoting Christian goals. It sounds about as rational as calling the Confederacy "Baptist extremists," just because many in the Confederacy happened to be Baptist.
I would also note that the group is funded by Bhutan and Myanmar. I know little about Bhutan, but Myanmar is certainly no friend of Christians!!!
Those aren't Christian extremists -- those are ethnic/regional extremists, they are basing their secession movement purely on their ethnicity.