People put a lot of stock in agreement. It seems the only thing they can agree on is that everyone must agree. This cannot happen, because we are not robots.
Evil is not caring when you should. Far from being a thing, it is simply a lack of something. And those who lack demand that others agree with them.
Everyone has a right to be wrong. As long as no one gets hurt, this is not a problem. Forcing agreement is the spiritual essence of a thing called control.
Throughout history, people have attempted to force what they believe on others. Much blood has been shed to these ends. In the retaining of power, there are no scruples.
What good is it to have power if you are not going to make things better? Someone will arise to take it away. And you will be left with the nothing you made.
Difference comes from being different. It is not something to be extolled, but recognized. Whether people agree or not, it does not mean they cannot be friends.