“You know, I remember in high school, already I was pretty old. I suddenly asked myself at one point, why do I care if my high school team wins the football game? I mean, I don’t know anybody on the team, you know? I mean, they have nothing to do with me, I mean, why I am cheering for my team? It doesn’t mean any — it doesn’t make sense. But the point is, it does make sense: it’s a way of building up irrational attitudes of submission to authority, and group cohesion behind leadership elements — in fact, it’s training in irrational jingoism. That’s also a feature of competitive sports. I think if you look closely at these things, I think, typically, they do have functions, and that’s why energy is devoted to supporting them and creating a basis for them and advertisers are willing to pay for them and so on.”
Source: Noam Chomsky in Manufacturing Consent: Noam Chomsky and the Media