I think because we all support the same team there's this idea we must have other things in common. We don't, we just support the same football team! It's a real cross-section of people, some of whom if we met in real life we'd really like, some of whom we wouldn't. There's gonna be a massive divergence of opinions etc - and people who are respectful and polite, and those who aren't. But there's a huge difference between disagreeing with someone and thinking they're an idiot, to actually being abusive.
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