Are we all still in high school? I lost at least two "friends" today over a stand against exclusion!

I’m really unhappy at the moment over a teacher luncheon that is planned for Tuesday. Our classes start in a few weeks. On Facebook, we are all contacting each other and suddenly, at my mention of one of our newest, people are dropping out. As in “I thought it would be the ‘cool’ of us, and it’s getting lame, I’m out”. I remember when I was new, and they all treated me like a leper. Now they expect me to do the same, and I called them out on it. Really????