Nobody ever feels they have the wrong opinion.
Everybody is sure they are right. Just look at yourself. Do you feel that you have the wrong opinion? Do you feel you are wrong about how you interpret reality? Do you think that you are holding the wrong values?
I’m sure you don’t, and nobody else does either.
Even if someone were to change to the opposite opinion, they still think they are right. They would possibly agree that they were wrong earlier, but NOW they are right. Many will find something or someone to blame for their earlier “wrong” opinion. Before they were wrong but now they see.
We always perceive ourselves as being right, NOW.
It is astounding to watch the amount of fury that is evoked by thinking and acting in terms of right and wrong. The reason for this fury is that the idea of right and wrong is a characteristic of the ego (the built up persona we all live with). The ego needs to be right, or its existence is threatened. Since the ego is very primitive, being wrong means a symbolic death. Fighting for your beliefs then becomes a fight for survival and that is why there is such hatred between people who hold different opininons and values. The ego takes it as a life or death situation.
It’s not until you have developed a more mature way of seeing reality and are able to see through how the ego (your own and others’) operates, that peace is possible. It is pointless to argue with someone who is in the grips of their ego.
The good news is, we can always change ourselves. The bad (?) news is, we can never change another. Change comes from the inside, never from the outside.