I am surprised he is not a Christian extremist!
By and large, the Christian community has NO TEACHINGS in its Scriptures or church teachings for violence and murder. Although there have been examples of such actions in the past - for the overwhelming majority, in the present — no such thing exists, as in Islam and the Koran.
HOWEVER, that being said, there are a very few and smallish number involved in extremism. One example is just a few miles from me - the Christian Identity group in Oklahoma. The overwhelming number of Christians would disavow any connection to “Christianity” by them. This group is the group that had Timothy McVeigh over a few times and may have helped him.
I’ve got a relative (actually dead now) who was in the Christian Identity group, and they’re a mean bunch that you don’t want to mess with.