I have a serious question regarding sacred texts and original interpretation of said holy text inside the religion.

If lets say 100 people follow religion "X". The religious text says to "Love thy neighbour". After a century, 90 out of the 100 people turn violent on their neighbours. Can the 10 good people of the religion still use the argument that "this kind of behaviour is not related to our religion, no matter what the 90 people did" to defend their religion ?