Dd2 is 12 and has suddenly announced that she supports one of the old firm teams. My mums family are all supporters, but I have deliberately stayed away from all things football, because I hate the sectarianism that surrounds it in the West of Scotland. She wants a football top in the team colours. I have categorically said no. I feel that this "supporting the team" has come from friends who do so. I have tried to explain to her why I feel this way about it, but I'm told I am prejudiced/ sexist /whatever. She says she wants to belong, in some way, but I don't want her to belong to this! If I'm honest, I think its "chavvy" ( and I know that is very frowned upon in this site, so apologies) but I can't understand why she wants to be part of this. I'm usually pretty easy going with my dc. They can have their own opinions on things, pursue interests they want, but I just don't like this. AIBU?