Standing firm can be pointless when being unmovable means being unfeeling. You can be true to yourself, steadfast in your beliefs, without being unkind.
You can be moved to take action without trampling those who don’t share your ideals. I don’t have to agree with you to respect you.
I don’t have to insult you, if I can’t change your mind. Even if I can’t accept your position, I can appreciate your passion. We have different opinions, have different truths, but we can both be right, and we can both be civil.
If we can’t, we need to move along.