Football fans cheer their team on by wearing the same colours, and singing the same songs, and this works as a kind of glue, bonding the crowd together and making them feel safe.

足球球迷们通过穿同样颜色的衣服，唱同样的歌，为自己支持的球队加油，这就像一种粘合剂，把人群粘合在一起，让他们感到安全。