Is this really the actions of a “Christian Extremist” group?
I can’t imagine a true “Christian” doing anything like this?
Neither can I.
They are a group founded by some former Catholic priest - who got kicked out of the church - and started his own militia, probably for revenge. They flourish amid the violence in Sudan, Rwanda, the Congo, etc. If you remember during the Rwandan genocide, massacres in churches were quite common.
LRA is a particularly horrifying group mainly active in Uganda, they’ve committed awful barbarities.
Nothing Christian about them.