Every battle happens due to ignorance of oneself.
For instance, oneness is not a concept or knowledge. But if one got the knowledge of it but one is in ignorance of oneself, then there will happen a battle of righteousness.
In fact, we can often see such battles. It’s like explaining how accurately one understands the concept and how wrong others are.
Unfortunately, the battle can develop into physical violence.
Nevertheless, most people will try to prevent such a development by willpower, but it is common for them to resent and complain about society and others internally. It means there is no peace inside and outside.
Therefore, know oneself and need self-acceptance as one is. The ultimate self as consciousness, and the aspect of ego, one should be equally profound, realized and accepted.
That’s the only way to get rid of conflict, battle in this world.