I believe in diversity and I believe in tolerance, and I can prove it. I have friends who are Cubs fans and I have friends who are Cardinals fans and I still accept them. They are welcome in our home and they know it, showing up for our First Friday gatherings, as well as other times, with regularity, making those times more fun. I am okay with their wearing their teams' paraphernalia and keeping me up to date with their teams' successes and failures. They are intelligent fans who know the game, appreciate the history of their teams, and are aware of the thousands of statistics that only major league baseball can generate (right-handed hitting Ernie Forbles' batting average the day after a night game on the road in June when the sun is shining and lefty reliever Portnoy Rackowitz is pitching with a 2-1 count).
My friendship and expansive tolerance is partly based on sympathy because, with the Cubs every century or so with a World Series championship notwithstanding, their teams are, well, inferior. Inferior to what, you might ask. Inferior to my team, for 62 years now, the Boston Red Sox. We have better fans, history, ballpark, city, players, management, and more nuns in the stands.
But tolerance and welcoming diversity only go so far, and they do not include embracing fans of the Forces of Evil, the New York Yankees. A pox on their houses